QUIETER than OSHA noise level requirements! Springless, pre-lubricated air motor has internal muffler and needs no external oiler. High pressure 50:1 ratio pump dispenses 45 ounces of NLG1 0-2 grease per minute at 150 PSI. Handles all grades of lubricants. Follower plate assures positive prime at lowest temp. Nitrided steel plunger and bushing resist abrasion and prolong pump life. Rugged air coupler, heavy duty high pressure control valve and swivel. Shovel-type foot adds mechanical priming to normal suction. Height: 43 1/8 inch on a 120-lb. drum (not included.) Roll-around 17 x 17 inch base.