Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant's customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. As an Amazon Associate we may earn from qualifying purchases. We may receive a commission from purchases made through links on our site, which will help us continue to provide you with value.
Best Choice LEOWAY 
LEOWAY All-Metal Extruder Gear Kit for P1P, P1S, X1C 3D Printers,Upgrade DLC Nano-Coated Hardened Steel & Self-Lubricati Wide Compatibility：Direct upgrade all-metal extruder gear for P1P, P1S, X1C 3D printers—no modifications needed.compatibHosim 
Hosim 1:10 Scale RC Car Differential Gear Helical Diff Gears Upgrade Accessories Chrome Steel, Upgrade Spare Parts RC Ve Parts Number: X07-CS05.INJORA 
INJORA 24T/12T Alloy Steel Helical Gear Set for 1/18 TRX4M Front Rear Axles(2PCS) Replace the stock plastic gears, fit TRX4M front or rear axlesXUXHOU 
Helical Gear Set, Durable Steel Construction for 1/18 Scale RC Vehicles Front Rear Axle Gear Kit for RC Enthusiasts Off- [RELIABLE STEEL CONSTRUCTION] Made of steel material for superior durability and long-lasting performance, ensuring lastBest Value AKLOSIPY AKLOSIPY Helical Gear Set for /18 TRX4M Remote Control Vehicle, Steel Front and Rear Axle Differentials Gear Steel Construction - Crafted from steel, our helical gear set promises -term reliability and performance. Unlike plasticPOENVFPO 
POENVFPO 2 Pair RC Helical Gear Set,RC Front Rear Axles Steel Gear for 1/18 Crawler Car Upgrade Parts (10/24T) Enhanced Durability: These steel gears offer superior strength and durability compared to plastic gears, ensuring long lMEUS RACING 
MEUS Racing 12-22T TRX4M Overdrive Differential Gear Helical Diff Gears Set for Traxxas TRX4M Bronco Defender K10 F150 1 These differential gears are made of high quality, less vibration and noise, better wear-resistance than stock gears.INJORA INJORA 12/24T Steel Alloy Stock Gear Set and 12/20T Overdrive Helical Gear Set for 1/24 FMS FCX24 FCX18 RC Upgrade Replace the stock plastic gears, fit front or rear axles.INJORA INJORA 050 50T Brushed Motor with Helical Gear Complete Transmission for SCX24 AX24 1/24 RC Crawler Upgrade Precision Engineering: Precision CNC machining ensures the high quality and performance for your RC crawler.RASTKY RASTKY DC Helical Gear Motor High Torque Encoder with Full Metal Reduction for Industrial Supplies 1 Helical Gear Motor [PREMIUM MATERIALS] Zinc alloy and red copper construction for industrial drive applications.Cocoarm Cocoarm Steel Axle Gears, Premium Steel 2T 16T Helical Gear for SCX30 1/30 RC Crawler Car, Enhanced Performance and Dura [High Performance]Upgrade your RC crawler with high-grade steel gears, featuring a 2T 16T helical design for optimized pVOSAREA VOSAREA 14 Ratio Helical Gear Set for Acoustic Classical Guitar Head Tuner Caps Suitable for Guitar Repair and Replaceme Gear ratio of 1:14, can achieve accurate tuning, good control help tune quickly and accurately,bass tuners gears,tuningJenivaint Jenivaint Steel Axle Gear, 2T 16T Teeth Replacement for SCX30 1/30 RC Crawler Car, with High Grade Steel Helical Gear De [Perfect Replacement] Designed specifically as a replacement for the scx30 1/30 rc crawler car this gear features 2t 16tASHATA ASHATA High Strength RC Car Front Rear Axle Gear for SCX30 1/30 RC Crawler Car 2T 16T Helical Gear for Improved Durabili [ENHANCED DURABILITY] Steel axle gears ensure toughness and durability for intense off-road driving.Generic Mixer Helical Gear Part - Mixer Helical Gear Replacement, Helical Gear Replacement | P Helical Transmission Gear Spare P Reliable Material - Made with food silicone, PP and metal material, our mixer worm gear exhibits excellent sealing and nuxcell uxcell 1 Mod 13T 8mm Bore Helical Gears Set, 2 Pcs 45 Degree Left Hand and Right Hand Staggered Shaft Spiral Gear with M Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 13T, 8 mm Bore, 45 Degree Left Hand and Right Hand Thread)Filfeel FILFEEL Helical Axle Gears Replacement for 18/18 RC Crawler – 10T & 20T Metal Helical Differential Gears Compatible with OEM-Compatible Fit: Helical Axle Gears Replacement for 18 /18 RC Crawler is engineered to match the original axle geometuxcell uxcell 1 Mod 12T 6mm Bore Helical Gears Set, 2 Pcs 45 Degree Right Hand Staggered Shaft Spiral Gear with M4 Screw for Me Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 12T, 6mm Bore, 45 Degree Right Hand Thread)uxcell uxcell 1 Mod 13T 6mm Bore Helical Gears Set, 2 Pcs 45 Degree Right Hand Staggered Shaft Spiral Gear with M4 Screw for Me Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 13T, 6mm Bore, 45 Degree Right Hand Thread)uxcell uxcell 1 Mod 13T 5mm Bore Helical Gears Set, 2 Pcs 45 Degree Left Hand Staggered Shaft Spiral Gear with M4 Screw for Mec Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 13T, 5mm Bore, 45 Degree Left Hand Thread)uxcell uxcell 1 Mod 12T 6mm Bore Helical Gears Set, 2 Pcs 45 Degree Left Hand Staggered Shaft Spiral Gear with M4 Screw for Mec Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 12T, 6mm Bore, 45 Degree Left Hand Thread)uxcell uxcell 1 Mod 13T 10mm Bore Helical Gears Set, 2 Pcs 45 Degree Right Hand Staggered Shaft Spiral Gear with M4 Screw for M Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 13T, 10mm Bore, 45 Degree Right Hand Thread)uxcell uxcell 1 Mod 12T 5mm Bore Helical Gears Set, 2 Pcs 45 Degree Left Hand Staggered Shaft Spiral Gear with M4 Screw for Mec Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 12T, 5mm Bore, 45 Degree Left Hand Thread)uxcell uxcell 1 Mod 13T 5mm Bore Helical Gears Set, 2 Pcs 45 Degree Right Hand Staggered Shaft Spiral Gear with M4 Screw for Me Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 13T, 5mm Bore, 45 Degree Right Hand Thread)uxcell uxcell 1 Mod 14T 5mm Bore Helical Gears Set, 2 Pcs 45 Degree Right Hand Staggered Shaft Spiral Gear with M4 Screw for Me Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 14T, 5mm Bore, 45 Degree Right Hand Thread)uxcell uxcell 1 Mod 14T 6mm Bore Helical Gears Set, 2 Pcs 45 Degree Left Hand Staggered Shaft Spiral Gear with M4 Screw for Mec Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 14T, 6mm Bore, 45 Degree Left Hand Thread)uxcell uxcell 1 Mod 13T 6.35mm Bore Helical Gears Set, 2 Pcs 45 Degree Right Hand Staggered Shaft Spiral Gear with M4 Screw for Package Includes: 2 Pcs Helical Gears with M4 Screws, (Mod 1, 13T, 6.35mm Bore, 45 Degree Right Hand Thread)FixFusion 450ĸ 80X3 motor helical gear/3.5mm/11T/12T/13T/steel gear(13T) 450ĸ 80X3 motor helical gear/3.5mm/11T/12T/13T/steel gearFixFusion 450ĸ 80X3 motor helical gear/3.5mm/11T/12T/13T/steel gear(11T) 450ĸ 80X3 motor helical gear/3.5mm/11T/12T/13T/steel gearFixFusion 450ĸ 80X3 motor helical gear/3.5mm/11T/12T/13T/steel gear(12T) 450ĸ 80X3 motor helical gear/3.5mm/11T/12T/13T/steel gearThewasc Printers Extruder Gear Coated Surfaces Integrated Helical Gear Kit for Printer P1S X1C Small Extruder Hardened Steel Ass As metal feed gear for extruder, providing feeding function and precise operationsSpacnana Zhouyu Helical Gear Bronze with Helical Wheel 10:1 + Metal Helical Kit, Simple Transmission Structure for Helical Gear B [Versatile Mounting Options] The gear mounts on a 4.7mm diameter D-shaft, while the can be mounted on either a 6mm or 4.POENVFPO POENVFPO Helical Gear Set, Steel Remote Control Front and Rear Axle Gear with Low Noise and Stable Operation for 1/18 TR [Compact Lightweight Design] The gears maintain a perfect balance between strength and weight adding minimal bulk to youZjythocyber RC 35T Differential Helical Gear, Replacement for ZD Racing 1/7 MX 07 RC Car, Large Steel Differential Gear with Sealing Enhanced Power Transmission: This RC 35T differential helical gear delivers efficient power transfer to your ZD Racing 1Generic Manual Helical Gear for Awning,Awning Drive Gear, Drive Helical Gear Hardware Parts, 360 Adjustable Drive Helical Gear H MULTI-PURPOSE COMPATIBILITY - With its sturdy construction, this awning crank gear is suitable for a variety of models oJinhxofs Jinhxofs Extruder Gear Handle Kit Easy Upgrade Coated Filament Drive Gear for Repair, A1/A1mini All-Metal Extruder Brass 【Repair Value】: Ideal for maintenance or restoration, this gear set is designed to renew worn filament drive assembly anZyjGaliliad RC 35T Differential Helical Gear, Replacement for ZD Racing 1/7 MX 07 RC Car, Large Steel Differential Gear with Sealing Enhanced Power Transmission: This RC 35T differential helical gear delivers efficient power transfer to your ZD Racing 1Yjcnelcr Yjcnelcr Helical Gear Coating Extender Gear High Precision for Printer P1S X1C Printer Printer Extruder Gear Assembly P1S X1C Hardened Steel Helical Gear, High Abrasion Resistance and StabilityGeneric Awning Crank Gear,Helical Gear for Awning,Balcony Awning Helical Gear | Balcony Awning Helical Gear | Balcony Awning Hel MULTI-PURPOSE SOLUTION - Transform your outdoor space with this awning crank gear that perfectly fits most models on theGenérico Chainsaw Pump Kit - 2.76" x 2.56" Professional Lubrication Helical Gear Kit | Helical Gear Set | for arboli OPTIMIZED FLOW MECHANISM - Chainsaw pump prevents interruptions in lubrication, ensuring smooth cutting continuity and sGramigg Advanced Metal Helicals Gear for 3D Printer Extruders with DLC Coated Gears Minimizing Frictions Extending Lifes and Red This full metal extruder gear for P1S printers boasts brass and hardened steel structure, significantly enhancing wear rGeneric Helical Gear, Compatible with Fuji, 500 550 570, Minilab Parts 327D1060209 327D1060209A Compatible with 500, 550, and 570 minilab systems for mechanical transmission.Rainorning Rainorning 0.9 Module 45 Degree Staggered Helical Gear, 18 Teeth and 8 Teeth Brass Steering Reversing Gear Wheel 1) This gear is a hobbing process, and the accuracy can reach level 8.Eujgoov Double Axis Helical Gear Motor DC Helical Gear Motor, Double Axis Helical Gear Motor with High Torque Brush DC Motor and ALL METAL GEAR: The DC motor with brush adopts all metal gears, which are resistant to high temperature and have large bJERYS Helical Speed Reducer, Helical Gear Set 6mm Inner Diameter Gear Shaft Reduction Ratio 28:1 Helical 24 Teeth High Torque It adopts sophisticated production technology, which is compact, sturdy, has high torque, and has a gear reduction ratioTizuqe High-Strength Printer Extruder Gear with Helical Transmission Shaft for Steel Replacement High Strength Printer This gear achieves alignment, minimizing off-center rotation due to manual setupGeneric Compatible for Bambu Lab, X1 P1 Series DLC Nanocoated Hardened Steel Helical Gear Assembly Nickel Plating for 3D Printer DLC nanocoated hardened steel helical gear: This helical gear is made of hardened steel with DLC nanocoating and nickelGeneric Compatible for Tuozhu X1 P1S Brass Hardened Steel Helical Gear Handle Kit DLC Gold All-Metal Extruder 3D Printer Accesso Brass hardened steel helical gear handle kit for X1 and P1S extruders: This gear handle kit is designed for X1 and P1S aRuilogod Ruilogod Power Tool Replacement Part Helical Gear 46T for C7 Circular Saw Product Name : Helical Gear Wheel;Fit for : C7 Circular SawThewasc Complete Metal Helicals Gear for P1S 3D Printer Extruders DLC Nanocoating for Low Frictions Reduced Wear Helicals Gear This full metal extruder gear for P1S printers boasts brass and hardened steel structure, significantly enhancing wear rZPLKKYGR RC 35T Differential Helical Gear Large Differential Gear Repair Parts for ZD Racing 1/7 MX 07 RC Car Applicable Models: RC differential helical gear is suitable for ZD Racing 1/7 MX 07 RC cars, please confirm the RC car mYechiry Yechiry Extruder Gear Assembly, DLC Nano Coated Brass Steel Helical Gear with Self Lubricating Performance, Ideal for A1 [Sturdy Aluminum Handle] Designed for longevity, the handle is constructed from premium aluminum alloy that withstands rGeneric Compatible for Bambu Lab, DLC Nanocoated Hardened Steel Helical Gear Assembly Nickel Plating for X1 P1 Series 3D Printer DLC nanocoated hardened steel helical gear: This gear is made of hardened steel with DLC nanocoating and nickel platingCocoarm Cocoarm Extruder Gear Assembly, Nano Coating Hardened Steel Helical Gear Handle Kit for Lab A1 A1 Mini 3D Printer [Helical Dual Drive Design]: We designed our dual drive gear with a helical tooth pattern that grips filament firmly witRuilogod Ruilogod Power Tool Spare Part Helical Gear Wheel for 5900 Circular Saw Package Content : 1 x Helical Gear WheelRainorning Rainorning 45 Degree Helical Gear 1:2 Reduction Gearbox 90 Degree Right Angle Steering Reversing Angler Gear Module Generic Extruder Motor Helical Gear, Compatible with Bambu, Lab, X1 P1 Circular Stepper Parts(1PCS) 9-tooth helical gear designed for 3D printer extrudersOCTNPQF 2PCS/Set Helical Gears for Ice Cream Machine Extruder Pump, Commercial Frozen Dessert Equipment Replacement Parts The replacement parts of the ice cream machine can be installed through basic stepsRASTKY RASTKY Upgraded Extruder Helical Gear Hardened Hotend Extruder Gear Handle 3D Printer All Metal 【Applicable Model】: specifically designed , our extruder gear professionally manufactured with standard size, ensuring aKiramekazaku Fit for Phaetus DXC Extruder Helical Gears Dual-Drive System Standard Version Compatible with Creality K1 / K1 Max / K1C [Dual Drive Feeding] The dual drive structure grips printing material firmly to deliver steady and consistent feeding thAolidsive Aolidsive Extruder Gear Assembly, Brass and Steel 3D Printer Replacement for A1 Mini with Upgraded Helical Gear for Mult [High-Performance Replacement]Designed for A1 and A1 Mini 3D printers, this extruder gear assembly ensures continuous anBQAQCIHQ 2 pcs/Set Helical Gear,Ice Cream Machine Parts Helical Gear,High Precision Ice Cream Machine Extruder Pump Gear High-precision transmission guarantee: precision machining of tooth shape, high meshing accuracy, ensuring uniform and sUlan Press Helical Gears: A Practical Tretise Dpofirs Dpofirs Extruder Gear Assembly for Lab, P1P, P1S 3D Printers, Brass and DLC Coated Hardened Steel Kit with Helical Gears WEAR PROOF AND NON SLIP: The gear appearance is treated with DLC coating for hardening, which not only wear proof but alAKLOSIPY AKLOSIPY 3D Printer Extruder Gear Kit for P1S - Upgraded Helical Gears with Wear- Coating, Enhanced & Filament Applicable - This 3D printer extruder gear kit is specifically designed for the as well as the P1P and P1S . It is to coKiramekazaku Fit for Phaetus DXC Extruder Helical Gears Dual-Drive System Standard Version Compatible with Creality K1 / K1 Max / K1C [Dual Drive Feeding] The dual drive structure grips printing material firmly to deliver steady and consistent feeding thJectse Jectse 3D Printer Extruder Gear Kit Hardened Steel Integrated Helical Gears for Anycubic 2 Pro 2 Maximum Plus Printing P [HIGH WEAR ] Crafted from sturdy coated steel and DLC coating, this extruder gear kit offers exceptional durability andBadafaci Badafaci Hardened Steel Extruder Gear, Durable Helical Gear with Nano Coating for H2D 3D Printer, Easy Install with Inte [Strong Hardened Steel]Constructed from hardened steel with a nano coating, enhanced wear for longevity.Generic Gear with Helical, Compatible with Fuji, 3pcs 327D1060209 327D1060209A 500 550 570 Frontier Minilab Part Cut gear teeth ensure smooth power transmissionKiramekazaku Fit for Phaetus DXC Extruder Helical Gears Dual-Drive System Standard Version Compatible with Creality K1 / K1 Max / K1C [Dual Drive Feeding] The dual drive structure grips printing material firmly to deliver steady and consistent feeding thKessinger Publishing Helical Gears: A Practical Treatise (1893) LOKLNEYK Full Metal Extruder Upgrade Kit, Compatible with Bambu Lab A1/A1mini - Hardened & Brass Helical Gears with DLC Coating Upgrade your 3D printing experience with our Full Metal Extruder Kit designed Compatible With Bambu Lab A1 and A1mini.NURUGURE 1.25 1.5 2 Module 20T 25T 30T 40T 50T Left Hand Helical Gear for Transmission Left Hand Helical Gear 1.25M 1.5M 2 Module 20T 25T 30T 40T 50T Spiral Helical Gear Machine Transmission System Helical RSENECESLI SENECESLI 3D Printer Hardened Steel Extruder Helical Gear Wear-Resistant for H2D Easy Installation [ENHANCED DURABILITY] Hardened steel construction with nano coating for long-lasting performancePomya Pomya 3D Printer Hardened Steel Extruder Helical Gear Wear-Resistant for H2D Easy Installation [ENHANCED DURABILITY] Hardened steel construction with nano coating for long-lasting performanceNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeKiramekazaku Fit for Phaetus DXC Extruder Helical Gears Dual-Drive System Standard Version Compatible with Creality K1 / K1 Max / K1C [Dual Drive Feeding] The dual drive structure grips printing material firmly to deliver steady and consistent feeding thNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.25 1.5 2 Module 20T 25T 30T 40T 50T Left Hand Helical Gear for Transmission Left Hand Helical Gear 1.25M 1.5M 2 Module 20T 25T 30T 40T 50T Spiral Helical Gear Machine Transmission System Helical RGeneric Extruder Motor Helical Gear, Compatible with Bambu, Lab, X1 P1 Circular Stepper Parts(2PCS) 9-tooth helical gear designed for 3D printer extrudersGeneric Compatible for Tuozhu X1 P1 36mm Stepper Motor Stainless Steel Helical Gear Lead Wire 3D Printer Accessories 36mm stepper motor for X1 and P1 extruders: This 36mm stepper motor is designed for X1 and P1 printer extruders, providiHyuduo Hyuduo Hardened Steel Extruder Gear, Integrated Shaft Design with Nano Coating and Embossed Surface, Integrated Shaft Ex INTEGRATED SHAFT: The integrated shaft design of hardened steel extruder gear has better concentricity and can reduce ecGeneric Upgrade Hardened Steel Extruder Gear for Plus Helical Gear Integrated Shaft Extruder Printer Accessories This extruder gear ensures smooth integration and excellent operational for your printer.Changor Changor Stepper Motor Efficient Helical Gear Motors for Office Automation 2 Phase Stainless Steels Mini Gear Motor for H [PREMIUM MATERIAL] - Adopts durable stainless steel and copper materials with a rust-proof helical gear structure for loGeneric Extruder Motor Helical Gear, Compatible with Bambu, Lab, X1 P1 Circular Stepper Parts(3PCS) 9-tooth helical gear designed for 3D printer extrudersIndependently published How to Create Mechanical Gears Persian (M.Y Engineering) Spur and helical gear drives: Chapter 19 (Design of Machine Elements by Graphical Methods For Engineers and Machine buil NURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeSunnyLark SunnyLark Helical Gear Coating Extender Gear High Precision for 3D Printer P1S X1C 3D Printer 3D Printer Extruder Gear Assembly for P1S X1C Hardened Steel Helical Gears, High Abrasion Resistance and StabilityNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeNURUGURE 1.5 2 3 Module 15T 18T 20T 22T 25T 30T Right or Left Hand Helical Gear 1.5M 2M 3 Module Helical Spiral Gear 15T 18T 20T 22T 25T 30 Teeth Gear 90 Degree Tapered Wheel Pinion Right Left Hand HeDesign and Finite Element Analysis Of Helical Gear: A Project Work QUBYNG Nema23 Motor Planetary Gearbox Helical Gear Reducer Reduction Gearbox 200W/400W Servo Motor Speed Reducer(6.35mm Input,R Fan MotorsPORRZAJD PORRZAJD Helical Gear Reducer Helical Gear Box Gear Motor VF075 Input 14/24 Ratio 5:1/100:1 Tin Helical Gear(Ratio 80 to Starter Motors