The unique two stage pump creates a wave action that smooths out those annoying airlocks. This grease gun is industrial strength. Able to pump at 10,000 PSI (690 Bar). It will put grease in stubborn fittings that don’t take grease with a hand pump grease gun. This also makes tensioning excavator (crawler) tracks, in the field, a simple job. At just 11 strokes per ounce, the G. Gun delivers almost 4x the grease per stroke of battery or hand-pump grease guns. The canister holds over two gallons of grease. That’s 20 standard size grease tube cartridges you need to replace for every one G. Gun refill. You spend a lot less time refilling or replacing grease tube cartridges and more time getting your equipment greased. You can maneuver to get at all your grease fittings by moving the included 10-foot hose and attaching the LockNLube Grease Coupler that comes with every G. Gun. No need to pick up and move the G. Gun, simply pump with your foot. INCLUDES THE G. SCOOP! The G. Scoop makes it easy to load your G. Gun with bulk grease. Quickly and cleanly scoop grease from a bucket into your G. Gun. Move pounds of grease with each scoop and cleanly stores the scoop and paddle in the included case.