PROLUBE 43047 VARIABLE STROKE PISTOL GRIP GREASE GUN, WITH HOSE/COUPLER, 14 OZ. – 7000 PSI, 1/8″ NPT ALL WEATHER GREASE GUN, DESIGNED ESPECIALLY FOR EASE OF USE IN VERY COLD WEATHER CONDITIONS; VENTURI MECHANISM COUPLED WITH A LARGE GREASE INLET HELPS RETAIN PRIME. ROBUST GREASE GUN BARREL 0.049″ (1.2 MM) THICK, HEAVY DUTY FOLLOWER SPRING, CNC MACHINED GREASE GUN HEAD MACHINED TO VERY CLOSE TOLERANCES THAT ENSURES PERFECT FITS, LARGE ROLLED THREADS FOR FAST & EASY RE-LOADING. HEAD INCORPORATES A UNIQUE BULK LOADER WHICH DOUBLES AS AN AIR BLEEDER; UNIQUE ADJUSTABLE STROKE MECHANISM THAT SWITCHES BETWEEN HIGH VOLUME & HIGH PRESSURE APPLICATIONS WITH EASE. HIGH VOLUME FOR FASTER GREASING AND HIGH PRESSURE FOR USE IN COLD WEATHER; WORKS WITH ALL GREASE TYPES NLGI 1, 2 & 3. INCLUDED IS 12″ HIGH PRESSURE FLEXIBLE HOSE AND STANDARD 4 JAW COUPLER WITH BALL CHECK