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Best Choice Sportneer 
Sportneer Bike Lock: Heavy Duty Anti Theft Bike U Lock with 150cm Security Steel Cable - 17mm Shackle Bicycle U-Locks wi Portable & Rugged: The Sportneer bike u lock is both portable and heavy-duty. It measures 7.76x5.02inches, with a thicknSportneer 
Sportneer Bike Lock: Heavy Duty Anti Theft Bike U Lock with 150cm Security Steel Cable - 17mm Shackle Bicycle U-Locks wi Portable & Rugged: The Sportneer bike u lock is both portable and heavy-duty. It measures 7.76x5.02inches, with a thicknBest Value KRYPTONITE 
Kryptonite Combo Bike U-Lock Standard, Anti-Theft Security Bicycle Lock, 12mm Steel Shackle, 4-Digit Resettable Combinat DURABLE DESIGN: This Anti-Theft bike u lock features a 12mm hardened steel shackle that provides high security against tSportneer 
Sportneer Bike Lock: Heavy Duty Bike U Lock with 1.8m Security Steel Cable - 18mm Shackle Bicycle U-Locks with Keys and ✿✿ Portable & Rugged: The Sportneer bike U-lock is both portable and heavy-duty. It measures 11.5x6.25 inches, with a thKRYPTONITE 
Kryptonite Evolution Mini-7 Bike U-Lock with Cable, Heavy Duty Anti-Theft Bicycle U Lock, 13mm Shackle and 10mm x4ft Len DURABLE DESIGN: This Anti-Theft bike lock features a 13mm hardened max-performance steel shackle with a bent foot anti-rMaster Lock 
Master Lock 8320D Keyed U-Lock, 7-1/4" x 8", Black Hardened steel body resists cutting, sawing and prying.Note: Measure your door's backset, cross bore and thickness to enMumQTam ![4 Digit Combination Padlock, Heavy Duty Anti Theft U-Shape Security Code Lock with Adjustable Shackle,for Bicycles,E-Bike,Mountain Bike,Gates,Shed,Fence [Adjustable Range 120-140mm]](https://d1ttb1lnpo2lvz.cloudfront.net/7e0a079/loader.svg)
4 Digit Combination Padlock, Heavy Duty Anti Theft U-Shape Security Code Lock with Adjustable Shackle,for Bicycles,E-Bik ** [ Premium Heavy Duty Bike Lock ] : This bike lock comes with a diameter 0.65 inch heavy duty shackle and has excellenTenixLox TenixLox Heavy Duty U Lock, 4 Digit Combination Password Bicycle Lock with U-Lock Shackle, Waterproof, No Key, Bike U Lo 【Strong and durable zinc alloy material】16mm super strong anti-shear U-lock for bicycle,motorcycle,electric car universaKRYPTONITE Kryptonite New York Fahgettaboutit Mini Bike U-Lock, Heavy Duty Anti-Theft Bicycle U Lock, 18mm Shackle with Keys, Ultim 18mm Hardended Max Performance Steel Shackle Resists Hand Tools, Bolt Cutters, and Leverage AttacksFITTOO FITTOO Bike U Lock with Cable, Bicycle Lock Heavy Duty, Extra Long 150CM Security Steel-Wire Cable, Widely Applicable of 【Sturdy & Multifunctional】This FITTOO bike U lock is made of Dia-28mm steel lock bar and Dia-14mm steel lock U-frame. Yo19% Off Generic Heavy Duty Anti Theft Bike U Lock with 120cm Security Steel Cable - 16mm Shackle Bicycle U-Locks with Keys for Road Moun Premium Heavy Duty Bike Lock This bike lock comes with a 16mm heavy duty shackle and has excellent heat resistant and hyMumQTam 4 Digit Combination Padlock,Heavy Duty Anti Theft U-Shape Security Code Lock with Adjustable Shackle,for Bicycles, E-Bik ** [ Premium Heavy Duty Bike Lock ] : This bike lock comes with a diameter 0.65 inch heavy duty shackle and has excellenSIGTUNA SIGTUNA Bike Lock - 16mm Heavy Duty Bicycle U Lock Shackle and Mount Holder, 1.2m Steel Chain Cable and 3 High-Security 【High Safety Level】This awarded SIGTUNA bike lock is made of 16mm high-performance steel for extensive holding power andKRYPTONITE Kryptonite Keeper Standard Anti-Theft U-Lock, Heavy Duty, 12mm Shackle, Black, Combination Lock, Lifetime 12mm Hardened Steel Shackle Resists Hand Tools, Bolt Cutters, and Leverage AttacksROCKBROS ROCKBROS Bike U Lock, Heavy Duty Anti Theft Bike U Lock with Cable Silicone Cover (Max 22.5MM Bike U Lock+Keys+1.2M/4Ft HEAVY DUTY SAFE ANTI THEFT: ROCKBROS bike u lock with cable is made of great quality steel and subjected to high tempera23% Off ULTRALOQ ULTRALOQ U-Bolt Pro WiFi Smart Lock with Door Sensor, 8-in-1 Keyless Entry Door Lock with Fingerprint, App Remote Contro Control Your ULTRALOQ Smart Lock Anytime, Anywhere: Lock, unlock, share access and see a Log of who’s entered and exactlTHJOPOKEEL 4 Pcs Baby Proofing Cabinet Locks Child Locks for Cabinets Adjustable U Shaped Baby Safety First Cabinet Lock Latches fo 【Wide Application & Easy Installation】Maximum distance of the U shape Lock is 5 inches, longer than the most cupboard loKirbyBear KirbyBear Bike U Lock – Heavy Duty Anti-Theft Bicycle Lock for Ebike, Escooter, Motorcycle – 4-Digit Resettable Combinat 【Keyless Convenience with Resettable Combo】：No keys, no hassle! This bike lock features a 4-digit resettable combinationPRIME-LINE Prime-Line Products U 10827 Door Reinforcement Lock, 3 in. Stop, Aluminum Construction, Satin Nickel Anodized Finish Designed to withstand 800 lbs. of forcePRIME-LINE Prime-Line Products U 9972 Jimmy-Resistant Deadlock, Diecast, Brass Color, Angle Strike, Double Cylinder Used to prohibit forced entry by spreading of door framesNomel Zinc Alloy U-Shape Padlock, 5 Digit Dial Combination Password Code Lock, Resettable Heavy Duty Waterproof Indoor/Outdoor [ Durable Material & Sturdy ] --- Made of high strength zinc alloy and hardened steel, the dial combination lock is sturPHWRECZ Mini Bike U-Lock with Mounting Bracket, Compact Anti-Theft Bicycle Lock for Quick Stops, Weather-Resistant U Shaped Lock Great for bikes, scooters and motorcycles, but also for locking doors securely.Lyxhag 8Pack Sliding Cabinet Lock, Child Safety Locks for Cabinet Doors, Baby Child Proof U Shape Locks Latch for Cupboard Kitc ✅【FOR MOST CABINETS AND DOORS】 - Baby cabinet locks that give you the flexibility to adjust the lock length within 4.7 i28% Off ULTRALOQ ULTRALOQ U-Bolt WiFi Smart Lock with Door Sensor, 5-in-1 Keyless Entry Door Lock with Built-in WiFi, Bluetooth, App and Control Your Ultraloq Smart Lock Anytime, Anywhere: Lock, unlock, share access and see a Log of who’s entered and exactlMumQTam 4 Digit Combination Padlock,Heavy Duty Anti Theft U-Shape Security Code Lock with Adjustable Shackle,for Bicycles, E-Bik ** [ Premium Heavy Duty Bike Lock ] : This bike lock comes with a diameter 0.65 inch heavy duty shackle and has excellenSpacnana Trailer Coupler Lock U Shaped Combination Lock for Security Universal Design with 11 Locking Positions for Better Durabi [Combination Lock] : Featuring a 4-digit password design, this hitch lock ensures better vehicle safety with its defaultULTRALOQ ULTRALOQ U-Bolt Smart Lock, 5-in-1 Keyless Entry Door Lock with App Control, Keypad Deadbolt, Auto Unlock, Auto Lock, Sm Keyless Entry Door Lock: Keypad + Smartphone App + Auto Unlock + Mechanical Key.EUDEMON EUDEMON 3 Pack U Shaped Child Proof Cabinet Lock, Baby Safety Cupboard Latch Lock for Knobs & Handles on Closet, Dresser ★Sturdy & Durable----Maximum distance of the U Shaped Lock is 6‘"(15cm), longer than the most cupboard locks on the markWeogine Bike U Lock with 5ft Security Cable 17mm Shackle, Bike Lock with 3 Keys and Mounting Bracket, Bicycle U-Locks Perfect fo [Portable and Built to Last] The Weogine bike U lock combines portability with robust durability. Measuring 7.76x5.02 inKRYPTONITE Kryptonite Evolution Mini-9 Lock with Flex Frame U-Bracket - Orange, 9-Inch 13mm hardened MAX Performance steel shackle resists bolt cutters and leverage attacks23% Off BUXIUGAN BUXIUGAN Child Safety Locks, Baby Proofing Cabinets, U-Shaped Child Locks, 2 Pack Black Security design: Cabinet locks for babies , baby proofing cabinets, child locks for cabinets bring safety to your kids aGeneric Bike U Locks Heavy Duty Anti Theft for Motorbike, Escooter, Motorcycle with 1.2M Steel Cable 4-Digit Resettable Combinat Keyless Convenience-This bike locks heavy duty anti theft, bike u lock combination has a 4-digit resettable combo is conULAC ULAC U Hold Universal Bike U Lock Holder, D Lock Holder, Lock Mount - S (125mm), Black (Black 19-3911tcx) Maximum safety for your bike - Secure hold for U-locks of 125-145 mm. Protect your bike from theft with this sturdy andJola's House Child Proof Sliding Cabinet Door Code Locks Baby Safety Cupboard Locks Adjustable U Shaped Cabinet Latches for Knob Hand 4 PACK AND HIGH QUALITY: The package includes 4 portable baby sliding cabinet door code locks. Made of safe sturdy ABS pDreambaby Dreambaby Sliding Cabinet Child Safety Locks - U Shaped for Knobs and Handles _xD835__xDC02__xD835__xDC07__xD835__xDC08__xD835__xDC0B__xD835__xDC03_ _xD835__xDC0F__xD835__xDC11__xD835__xDC0E__xD835_PRIME-LINE Prime-Line Products U 9943 Drawer & Cabinet Lock, 7/8 in., Diecast, Stainless Steel, 9/16 in. Max. Panel SECURE CABINET DOORS AND DRAWERS – This U 9943 lock can be used to secure cabinet doors, drawers and much more.Master Lock Master Lock 1479DAT 0.62" Long Shackle Barbell Lock The product is manufactured in ChinaLittle Chicks Little Chicks U-Shaped Baby Safety Glide Lock - Adjustable Childproof Cabinet Latches for Kitchen Cupboard - Suitable fo 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐂𝐡𝐢𝐥𝐝𝐩𝐫𝐨𝐨𝐟𝐢𝐧𝐠: Outsmart even clever toddlers with our advanced U-shaped baby safety lock,MLUOTALY MLUOTALY 4Pcs Universal Roof Box Mounting U Bracket, Stainless Steel Car Van U Bolts Clamps with 8 Lock Nuts and 2 Strap High Quality: Roof rack mounting brackets made of stainless steel and plastic, wear-resistant, temperature-resistant, noZeroStage Secure Lock Pro Combination Lock with Hardened Steel Shackle, 3-Digit Password, 75cm Retractable Cable, Silver, for Back VERSATILE SECURITY: Three-digit combination lock with 75cm retractable steel cable, perfect for securing backpacks, door10% Off Joyzan Joyzan Safety Steel Cable, Outdoor Travel Security Cable Lock Toroidal Bicycle Cables Cycling Sports Internal Loop Wire Safety Cable: The cable lock for backpacks and the luggage security cable is a versatile and reliable lock that can be uGranmagazz Brake Pedal Lock, Adjustable Car Steering Wheel Lock, Multifunctional Telescopic Anti-Theft U-Shaped Lock, Steel Anti-Th Premium Material: Universal Cone Lock Security Device, Made of premium stainless steel, offering excellent resistance toDqwtb Brass Key Rings Bulk Gold Key Chain Organizer Holder for Men Women with Secure Screw Locking 10 O-Rings Cute Purse Bag C Smooth Brass Finish: Made with carefully selected brass and mirror - polished to a smooth finish with rounded edges, whiPRIME-LINE Prime-Line Products U 11126 Door Blocker Entry Door Stop, Bronze Anodize Finish Designed to withstand 800 lbs. of force29% Off Defender Security Prime-Line U 11316 Swing Bar Door Guard with High Security Auxiliary Lock, Satin Nickel Finish (Single Pack) SWING BAR DOOR GUARD – The Defender Security U 11316 Swing Bar Door Guard, with a satin nickel finish, will increase peaANDRESLAD ANDRESLAD Large U-Shaped Metal Combination Lock Padlock for Cabinet Password Easy to Protect Your Privacy Door hanging lock-- 5 combination password, difficult to crack, effective anti-theft.PRIME-LINE Prime-Line Products U 9861 Push-in Sliding Door Keyed Lock, Aluminum Finish INCLUDES – This sliding door keyed lock adds additional security to your sliding door. It includes 1 lock with 2 strikes17% Off PRIME-LINE Prime-Line Products U 9928 Keyed Sash Lock, 2 in. Hole Centers, Heavy Duty Zinc Diecast, White Finish WINDOW SASH LOCK – This window sash lock can be used on vertical single and double hung sliding windows, and on horizontJulihai Childproof Cabinet Locks, Adjustable U Shaped Latch for Double Door Safety, Cabinet Latches for Toddlers and Kids [Child Safety Design]Keeps curious toddlers safe by preventing cabinet access with our adjustable U shaped locks.PRIME-LINE Prime-Line Products U 9819 Sliding Window Security Lock, Economy, Aluminum,(Pack of 4) Secondary LockROCKBROS ROCKBROS U Lock Bike U Lock with Cable Heavy Duty Bike Lock Bicycle U Shackle 21mm U-Lock 4 ft Cable Mounting Bracket Sc 【 High Quality U Lock】:ROCKBROS bike U lock is made of 0.84inch (21.4mm)alloy steel( including 0.36inch silicone cover).ULTRALOQ ULTRALOQ Smart Locks for Front Door - U-Bolt Pro WiFi Smart Door Lock with Handle Set, Fingerprint Keyless Entry Door Lo Control Your Ultraloq Smart Lock Anytime, Anywhere: Lock, unlock, share access and see a Log of who’s entered and exactlAdhiper Adhiper WH-1000XM4 Hinge Swivels + U Shaped Metal Hinge Lock Grove Replacement for Sony WH-1000XM4 Headphone,Replacement NoEBIEFLY VAC U Lock Adapter Machine Attachments for Vac-U-Lock Tools with Quick Air Connector Device Black Single Good Material :Adapter is made of high quality stainless steel materials, durable, convenient and swift, easy to assemblTimsec Vac-U-Lock Tools with Quick Air Connector Device, Single Adapter for VAC Machine Attachments, Black [WHAT YOU GET] - You will get 1 piece of Vac-U-Lock with quick connector coupler.ULTRALOQ ULTRALOQ U-Bolt Pro WiFi Smart Door Lock with Door Sensor, 8-in-1 Keyless Entry Door Lock with Built-in WiFi, Fingerprin Control Your Ultraloq Smart Lock Anytime, Anywhere: Lock, unlock, share access and see a Log of who’s entered and exactlLapetwbn Heavy Duty Anti Theft Cable Lock 100cm 2.5mm Braided Steel Security Wire with Plastic Coating Bike, Scooter, Luggage Loc MILITARY-GRADE PROTECTION - Features a ultra-strong 2.5mm thick braided steel core surrounded by durable plastic coatingPRIME-LINE Prime-Line Products U 9847 Sliding Door Loop Lock, 2-1/8 in., Hardened Steel Bar w/Diecast Base, Chrome Plated SECONDARY SECURITY LOCKING DEVICE – This Defender Security U 9846 Patio Sliding Door Loop Lock can be used on a patio slShuisen Shuisen U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 in Thick Doors, Door Lock Plates, Stainless S Compatibility: Door knob plates for interior doors fits door panels 1-3/8 inches thick, The mortise lock conversion platDanziX DanziX TSA Approved Lock and 4 Colors Stainless Steel Safety Tether，3-Dial Combination Travel Luggage Lock with Lanyard SAFETY TETHER AND COMBINATION LOCK: Ideal for locking bags to fixed objects or locks multiple bags together, and the safSwissGear SwissGear TSA-Approved Travel Sentry Combination Luggage Lock with Resettable Combo and Inspection Indicator, Black, One Lock uses a resettable 3-digit combo that you can assign.BRINKS BRINKS - 3 7/8” Mini U-Bar Lock - Weather Resistant and Pick Resistant Bike Lock, Blue Lock body constructed from steel.AIMALL AIMALL Adjustable Trailer Hook Lock U-Shaped Coupler Ball Cover Flower Basket Anti-Theft Lock for RV Yacht Car Hitch wit 🔒 Heavy-Duty Anti-Theft Lock for Trailers and RVs – Designed to prevent trailer hitch theft, this lock is made from casAKLOSIPY AKLOSIPY Trailer Coupler Lock U-Shaped 4-Digit Combination for Enhanced Security High Security - The U-shaped trailer lock is expertly designed to secure your trailer tongue and coupler, effectively thKRYPTONITE Kryptonite New-U Kryptolok Series-2 ATB Heavy Duty Bicycle U Lock Bike Lock with Transit FlexFrame Bracket 12. 7mm Hardended Performance Steel Shackle Resists Hand Tools, Bolt Cutters, and Leverage AttacksRhysJoy 6 Pcs Brass Key Ring - Gold Screw Lock Keychain with Carabiner Clip for Keys ✨【Timeless Solid Brass】Crafted from premium solid brass with 360° mirror polishing, this keychain accessory delivers excBROLEO BROLEO 256 Bit Encrypted USB Drive, U Disk Auto Lock, USB 3.1, Secure Flash Drive, Hardware Password, Military Encryptio PREVENT DATA LEAKAGE: Encrypted u disk allows you to protect all your sensitive data with hardware encryption to preventEBIEFLY 4.7x2.1 Inches Powerful Cup Adapter For Vac-U-Lock Machine Air Connector Device Attachments Accessory Gift (Blue-Large) Size: 12cm/4.72 Inches Suction Cup Diameter & 5.4cm/2.12 inches Height,Large size can fixed large size toysWOONEKY WOONEKY Large U-Shaped Password Lock with Extended Shackle for Cabinet and Door Handles, Black Combination Hanging Padlo Enhanced Security Solution Large U-shaped Password Lock Cabinet Door Handle Hanging Lock offers a 5- combination systemFxvhojq Fxvhojq Solid Brass Screw Lock Keychain, U Ring O Ring Combination Set, Rust Proof Wear Resistant, Secure Locking Carabi Quality Solid Brass: Practical screw lock carabiner is constructed of quality solid brass , featuring a smooth , glossyRWAJZAX Trendy U Shape Stainless Steel Cross Lock Chain Set for Women Portable Accessories 18k Gold Plated Finish Stainless Stee This stylish set makes a special gift for birthdays, anniversaries, or holidaysHuakaile Huakaile 18 Pieces 2.36''/6 CM Brass Key Ring Charm, Gold Carabiner with Storage Box, Screw Lock Keychain Clip Clasp Loc Complete Charm Kit: Suitable for keeping your keys and small accessories neatly stored. No more searching through clutteCornesty 5-Digit Code Lock Curtains Lock U-Shaped Suitcase Door Combination Lock Red Blue Silver for Travel Luggage Zinc Alloy 70 [Robust Structure] Fully mechanized structure, which is exquisite and sturdy and suitable for a variety of applications.センチュリー Century Lock U 64GB Security USB Memory with Password Button USB 5Gbps Connection LOCKU-64G_FP Product Contents: LOCKU-32G/LOCKU-64G main unit, instruction manual (English language not guaranteed)Generic Roof Rack Mounting Brackets - Luggage Rack Accessories Tools Roof Box U-Bolt Clamps,Metal U-Bracket Clips with Lock Nuts Ensures Smooth Ride: Our Luggage Rack Clips keep your luggage securely fastened to the U-bolt roof rack, preventing anyGoruxina Brass Key Ring - Gold Key Ring Screw Lock Keychain for Gold Carabiner Carabiner Keychain Clip for Keys (light gold) 🔑Solid Brass Durability: Crafted from high-quality solid brass, these keychain accessories are built to last. With 360-HAPINARY HAPINARY 10pcs Cartoon Safety Lock Pins U-Shaped Animal Buckle Brooches Random Colors for Diaper Fastening and Accessori Small pin:not only can use as safety pin for diapers, you can also use them for crafts, shower invitations and game,sockPOVMLFDP Combination Locks, Padlock of Zinc Alloy U-Type Combination Password Cabinet is Suitable for Storage Locks Padlocks You can use this padlock to secure items such as notebooks, diaries and jewellery boxes, or for use on mini-cabinets, drPOVMLFDP Combination Locks, Padlock of Zinc Alloy U-Type Combination Password Cabinet is Suitable for Storage Locks Padlocks You can use this padlock to secure items such as notebooks, diaries and jewellery boxes, or for use on mini-cabinets, drTotority Totority 10pcs Cartoon Safety Pins U-Shaped Lock Animal Brooch Buckle for Diaper Fastening and Clothing Accessories Rand Cartoon brooch--add some loveliness to any event by placing the pin in treat bags and favors brighten a day with wonderfJosojoou Josojoou 2 Pack Brass Screw Lock Keychain with 4 Rings, Black Durable Carabiner Key Rings for Men & Women, Universal Key Great Value Set: You get 2pcs black brass screw-lock keychains and 4pcs additional metal rings, making it super easy toIpetboom Ipetboom 10pcs Cartoon Baby Safety Lock U-Shaped Pins Animal Buckle Set for Infant Clothes and Diapers Protection Random Pin clasp--not only can use as safety pin for diapers, you can also use them for crafts, shower invitations and game,clo15% Off Kodansha Comics Blue Lock 18 15% Off Kodansha Comics Blue Lock 12 RFGGJNHKJUSWETGBVN Fingerprint Padlock U-Shaped Bike Lock Fingerprint Lock with USB Charging Function Portable Fingerprint Lock for Lockers In order to make the U-shaped lock more secure, the U-shaped lock steel beam has a unique "two-way locking" function.15% Off Kodansha Comics Blue Lock 17 WIICOYK WIICOYK Titanium Key Rings, Small U Shape D Ring with Screw Shackle, Key Organizer Keychain Rings, Car Key Tools Attachm 【Material】Made of premium titanium material, lightweight, high hardness & corrosion resistance, durable enough for long-WIICOYK WIICOYK Titanium Key Rings, Small U Shape D Ring with Screw Shackle, Key Organizer Keychain Rings, Car Key Tools Attachm 【Material】Made of premium titanium material, lightweight, high hardness & corrosion resistance, durable enough for long-SGdrRY Suitcase Locks， Digital Password The Door Padof Zinc Alloy U-Type Combination Cabinet is Suitable SGdrRY Suitcase Locks， Digital Password The Door Padof Zinc Alloy U-Type Combination Cabinet is Suitable(Silver) BVNFGHJK Padlock， Luggage Locks,Padlock, Digital Password The Door Padof Zinc Alloy U-Type Combination Cabinet is Suitable for St Manufacturer warranty will not apply. Please review Amazon’s return policy, which usually offers free returns within 30FVCHFGKUL FVCHFGKUL, Padlock of Zinc Alloy U-Type Combination Password Cabinet is Suitable for Storage Locks Padlocks ，Combination Manufacturer warranty will not apply. Please review Amazon’s return policy, which usually offers free returns within 30BVNFGHJK Padlock， Luggage Locks,Padlock, Digital Password The Door Padof Zinc Alloy U-Type Combination Cabinet is Suitable for St Manufacturer warranty will not apply. Please review Amazon’s return policy, which usually offers free returns within 30BVNFGHJK Padlock， Luggage Locks,Padlock, Digital Password The Door Padof Zinc Alloy U-Type Combination Cabinet is Suitable for St Manufacturer warranty will not apply. Please review Amazon’s return policy, which usually offers free returns within 30Baluue Baluue 10pcs Brass Key Ring U Shaped Carabiner Keychain Clip Screw Lock Keychain Accessories for Purse Handbags Making S long term brass construction: made with solid brass key ring and brass keychain hardware, the belt key holder brass prom25% Off Kodansha Comics Blue Lock 13 RMENST RMENST Fingerprint Padlock, U-Shaped Bike Lock Fingerprint Lock with USB Charging Function, Portable Fingerprint Lock fo In order to make the U-shaped lock more secure, the U-shaped lock steel beam has a unique "two-way locking" function.