This Robinson Racing Products pinion gear is machined from hard blackened steel with a 0.5 module tooth pitch, 12 teeth, and a 2mm bore, making it a direct-fit replacement for 1:18 scale Losi mini platforms. The hardened steel construction and blackened finish offer increased wear resistance compared to standard pinions. Includes a set screw for secure motor shaft mounting. Features: Hard blackened steel construction for increased durability 0.5 module pitch, 12 tooth count 2mm bore fits compatible Losi 1:18 scale motors Includes set screw for shaft retention 7/7/26 cs