This Robinson Racing Products pinion gear is machined from steel and features 13 teeth at 32 pitch (0.8 mod), making it a direct-fit replacement or upgrade option for compatible electric RC platforms. The included set screw locks the pinion securely to the motor shaft. Steel construction offers greater durability compared to stock plastic or softer metal pinions. Features: Steel construction for increased durability 32 pitch / 0.8 mod tooth profile 13-tooth count Includes set screw 7/7/26 cs