This Robinson Racing Products pinion gear is machined from steel and features 18 teeth in the 32 pitch (0.8 mod) specification. It includes a set screw for securing the gear to the motor shaft. The 32 pitch sizing makes it compatible with a wide range of 1:10 and 1:18 scale electric vehicles that use the 32p standard. A factory replacement or upgrade option for worn or stripped pinion gears. Features: Steel construction for durability 32 pitch (0.8 mod) tooth specification 18-tooth count Includes set screw 7/7/26 cs