Powerbuilt 648754 Pistol Grease Gun 5000Psi in Db Uses standard 14 oz. cartridges, bulk fill or hand pack Convenient one-handed operation. Knurled barrel for non-slip grip Durable chrome plated finish Convenient one-handed operation Knurled barrel for non-slip grip Durable chrome plated finish Includes push-button air bleeder valve to prevent air lock Includes 4 inch steel extension, coupler and bulk fill adapter