Northern Industrial Tools Air-Operated Oil Pump with Extension Kit - 1:1 Oil Pump for Oil up to 120 SAE, 4.8 GPM Double action oil pump is easy to operate and maintain Air-operated oil pump allows for easy integration into transfer system, with differential air motor to ensure smooth pumping Smart design means fewer parts for less pump wear and easier maintenance Suitable for use with oils up to 120 SAE Precision machined to ensure stability and long life