【High precision】:The gear set is with precision manufactured gear teeth for smooth, consistent performance,they works with low noise.
【Long-lasting Performance】:We provide 3 different teeth pinion gear(15T/17T/19T) to make you more choice in gear ration
【Easy to Install】:Easy to install, all metal internal gears for high strength. Made of heavy duty hardened steel, long time life span. Easy to install and remove
【Special note】:In the position of various screw holes, screw glue is applied, so that the screws are not easily separated from the upgrade accessories.