3-stage hand pump Made specifically for the Benjamin Discovery, Maruader, and Katana and the Crosman Challenger Includes a female Foster quick-disconnect on the end of the pump hose Goes up to 3600 psi (although some of the guns listed above operate on a max pressure of 2000 or 3,000 psi) With other hoses, pump can be adapted to other PCPs Requires less effort than other pumps Integral air pressure gauge Moisture filter