"The HMC Bi-Directional Rotary Pump is a lightweight, dependable aluminum unit with custom composite rotor that pumps gasoline, diesel, kerosene, mixed fuel, oil and industrial fluids in both directions, drawing from your tank, or siphoning through the hose. A great replacement for gas caddies with a 3/4 in. suction pipe. U.S.A. Includes Pump, Material Machined aluminum with composite rotor and vanes, Outlet Port in. 3/4, Oz. Per Crank 6.4, Works With Gasoline, diesel, kerosene, mixed fuel, oil, industrial coolants, Inlet Port in. 3/4, GPM 5. Crank style system pumps approximately 1 gallon every 20 revolutions 3/4 in. outlet port Includes Teflon tape"