Lever action barrel pump, designed for use with DEF, high viscosity oils, agricultural chemicals etc.. Pump design makes it extremely convenient and comfortable to pump thick oils without excessive fatigue. Built-in 2" bung adapter allows the pump to be fixed on drums with 2" opening. Pump position can be adjusted using the lock nut incorporated in the pump body. Pump outlet is fitted with an air vent cap which when loosened breaks the siphon action. Comes complete with suction tube for use with 15-55 gal. drums and a 6.5' x 3/4" flexible corrugated discharge hose.