PROLUBE 42702 LEVER GREASE GUN, WITH STEEL EXTENSION/COUPLER, 14 OZ. CAP., 10,000 PSI, H.D. 1/8″ NPT DESIGNED FOR PUNISHING DAY-IN AND DAY-OUT HEAVY INDUSTRIAL APPLICATIONS. DEVELOPS 10,000 PSI / 690 BAR, VARIABLE STROKE FEATURE BUILT IN FOR USE IN CONFINED AREAS. HIGH TOLERANCE ALUMINUM DIE CAST GREASE GUN HEAD. BUILT TOUGH, ROBUST BARREL 0.049″ (1.2 MM) THICK, HEAVY DUTY FOLLOWER SPRING, CNC MACHINED GREASE GUN HEAD, LARGE ROLLED THREADS FOR FAST & EASY RE-LOADING. INCLUDED IS 6″ STEEL EXTENSION AND STANDARD 4 JAW COUPLER WITH BALL CHECK