The GPM 20CR Carbon Steel Spur Gear is manufactured from hardened, black-treated 20CR material to provide consistent wear resistance and reliable service in the TRAXXAS MINI MAXX MONSTER TRUCK drivetrain. This 47-tooth, 0.8 module gear is engineered to replace the original plastic spur and to improve power transmission within the differential case. It fits directly in place of part #10756 and is intended for hobbyists seeking a durable drivetrain upgrade.