The HP-100 Dual Flo® Hand Pump is a premium hand pump that is reliable and versatile. For high-volume fuel transfer, use the high handle position: the HP-100 generates twice the flow of any other hand pump. For heavier fluids or for easier pumping, use the second stroke setting. In either handle position, expect economical, trouble-free operation Dual-Flo® Piston Hand Pump for use with fuel. This pump fits a 2 inch NPT bung. Includes 3/4 in. x 8 ft. (2.4 m) Buna-N® hose, thermoplastic nozzle, and adjustable suction pipe with static wire hose and metal spout.