The Rocket Hand Pump Repair Kit is used to repair your damaged Rocket Hand Pump from Valterra (RP800, sold separately). Valterra's Rocket Hand Pumps offer a high-flow piston action design with a special "prime lock" handle position. Included in the kit are the following items: piston top, piston bottom, piston assembly linkage, foot valve, suction cup, brass rivet, o-ring, pan screw, cone washer, foot valve spring, and a brass connector plate.