The PneuLuber is a revolutionary grease gun dual-piston air operated grease gun. The state-of-the-art and the most advanced technology makes PneuLuber, the most powerful, efficient, and durable air operated grease gun in the world. PneuLuber has the power, performance and the productivity. It has full automatic operation cycles continuously with high pressure delivery and dispenses one tube of grease in less than a minute. It has high pressure delivery of up to 6000 PSI / 413 bar output pressure means greater productivity. It delivers almost 6 times the volume of grease than other air operated grease guns. It works on small, portable compressors. It requires only 40 to 60 PSI air at 3.5 cfm. The patented dual-piston gear motor provides constant torque which enables you to speed up lubrication and control the volume of grease without compromising the output pressure. The patented, variable speed trigger allows you to control the grease flow which eliminates waste, avoids contamination and clean-up. The built-in pressure relief valve helps identify blocked bearings, lubrication line or fittings and allows excess grease to flow back into barrel with no squirting. The PneuLuber is ergonomically engineered to reduce stress on hand, arm, shoulder and back muscles and well-balanced for zero vibration.