This product is a 12-tooth M1 pinion gear designed to deliver reliable and efficient power transfer from the motor to the spur gear in your RC vehicle. It is manufactured from durable, wear-resistant material to handle high torque and repeated acceleration. The precision-cut teeth help ensure smooth gear mesh and reduced drivetrain noise. It is compatible with select Traxxas brushless motor applications that use Mod 1 gearing. Ideal for replacements or gearing adjustments, it supports consistent drivetrain performance and tuning flexibility.