This is a Castle Creations Mod 1.5 CC Pinion Gear. High power applications require a reliable way to get the power from the motor to the drivetrain. Manufactured from hardened steel, with a Mod 1.5 tooth profile and 8mm bore, these pinions are ideal for 1/5 scale electric applications. Choose from 12T, 14T, 16T, or 18T tooth count.