Koswork Mod 1 M1 18T Lightweight Hardened Steel Pinion Gear (for 5mm shaft, w/high torque set screw)
Features:
*Hardened steel material
*Lightened for best acceleration
*For 5mm bore motor
*Large 5mm set screw grips better
*Precisely CNC machined, lightened & hardened
*Made In Taiwan
*Cars, parts, accessories & others are not included.*