Air Powered Grease Guns, 14 1/2 oz, 150 psi, 7/16 in(UNEF), Hose, Pneumatic Pump

Features: Full automatic operation - cycles continuously when trigger is pulled, self-priming | Low operational noise | Flip-over follower eliminates grease bypass | Heavy-duty spring for prime retention | Locking follower rod for easy loading | 40:1 air motor