PUMPTASTIC!! I use it as an alternative to the onboard hand pump on a Seneca Aspen 22 cal Air Gun. It all was there in the Box except the Oil... and then I noticed that it's already in the Pump inside the Pressure Gage so it injects during the Pumping Process. Shiny, Tight, Amazing Pressures (always remember to bleed out the Hose before disconnecting from what yer filling) The Air Rifle needs about 3k psi and this gets it there.... the last few pumps ya really gotta lean on it but, it's pushing against alot of pressure in the Line and then into the Tank. Very sturdy, heavy, solid. I put alot weight on it and thought it could blow a seal.. no way. Includes Extra Seals, a few standard Connectors, and some other stuff. Connected right to the Probe that came with the Air Rifle. Great Deal compared to those ya can buy from major Air Gun Sellers. PUMPTASTIC!!