Pro grease gun, professional quality heavy duty construction & chrome plated finish for long service life, short stroke lever action for easy use in tight spaces, vented zinc die cast head cap, positive lock for easy filling, air bleeder valve eliminates air lock. Knurled thick wall barrel for secure grip, comfort grip lever handle, uses standard 14 oz grease cartridge, 4,500 maximum working pressure, 12,000 burst pressure, .106 volume per pump, pipe & hose included.