This product is a 17-tooth pinion gear with a 0.6 module, designed for RC vehicles to transfer motor power to the spur gear efficiently. Made from durable metal, it ensures long-lasting performance under high-speed and high-torque conditions. The pinion gear provides smooth and precise meshing with compatible spur gears, maintaining consistent drivetrain performance. It is compatible with many 1:10 scale RC cars and trucks. Installation is straightforward, fitting directly onto the motor shaft with proper alignment.