This Schumacher Racing Products pinion gear features a long boss design in 48 pitch with 39 teeth, made from hard alloy metal for durability under racing conditions. The extended boss provides additional shaft engagement and includes a set screw for secure mounting. It is a factory replacement part built to Schumacher specifications for their 1:12 platform vehicles. Features: 48 pitch (48DP) for compatibility with standard 48P gear systems 39 tooth count Long boss design for increased shaft engagement Set screw included for secure shaft mounting Hard alloy metal construction 7/7/26 cs