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. For use with water-based media, detergents, soaps, antifreeze, windshield washer, hydraulic oils, lubricants, herbicides & pesticides, AdBlue, UREA, DEF etc.. pump should only be used with non-flammable liquid.