This is a 1:1 ratio stainless steel pneumatic oil/antifreeze pump to be used on a 55 gallon drum. with air regulator and is rated for up to 9.25 GPM. Smart design with fewer parts for less wear and tear on the pump. Supplied with adjustable 2″ NPT bung adapter and 2″ x 37″ suction tube. Has 1/2″ male NPT oil outlet connection Typical fluids handled include motor oil, synthetic oil, hydraulic oil, gear oil, antifreeze, and automatic transmission fluid. This pump will consume 3.6 CFM. Comes with 2 year warranty.