This Robinson Racing Products Absolute Pinion is a hardened 48-pitch gear with 22 teeth, designed as a factory replacement pinion for Associated RC-10 and SC-10 platform vehicles. The hardened construction provides increased durability over standard pinions. Includes a set screw for securing the pinion to the motor shaft. Features: 48 pitch 22 teeth Hardened metal construction Includes set screw 7/7/26 cs