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【Hardened Steel】Hardened Steel Solid Construction, Work with Steel Spur Gear (Warm noted: please DO NOT assemble these pinion gears to plastic or aluminum spur gears, otherwise it may destroy your spur gear)
【48 Pitch】It won’t mesh with other pitch spur gear. Please pay attention to your Spur Gear’s Pitch before ordering
【Five different Teeth】there are 5 sizes and 17T 18T 19T 20T 21T are the teeth number of each pinion gear. Five different teeth pinion gears offer you Five Speed Modes to meet your requirements
【Widely Application】The pinion gear’s inner Diameter: 3.175mm (1/8 Inch), used on 3.175mm (1/8 Inch) Shaft RC Car Boat Plane Motor
【Package Included】5 x RC Pinion Gear, 5 x RC Grub Screw and 1 x Steel Hex Key
Description 48P Gears Set: 17T 18T 19T 20T 21T Upgrade Parts for 1/10 RC Car 3.175mm Shaft Motor