Secondary pressure side gauge connections are 1/4 in

5:1 Oil Pump with 3" ARO Thunder Air Motor for 55-Gallon Drum

It is the first and only tester developed specifically to run complete cooling system diagnostics with the engine running and at normal operating temperature and pressure

• Self-contained units and sealed models prevent contamination or spillage of product being dispensed

For hand operated grease guns

American Lube Equipment Economy Hand-Operated Gear Oil Dispenser for 16-Gallon Drum TIM-61 DEF ACCESSORIES Secondary pressure side gauge connectionsItems in Portable Hand Operated Gear Oil Dispensers Economy Hand Operated Gear Oil Dispenser for 16 Gallon Drum Fits on 16 gallon open head containers. Self priming. Includes 4' oil resistant hose and drum cover. Hose ID is approximately 7 16". No repair replacement parts available.