LUBEQ 12253 One Hand Grease Gun with Flexible Spout One hand grease gun for 14 oz. cartridges with 12 inch flexible spout and hydraulic coupler with 4 jaws for a better grip. Gun has zinc die cast head assembly, and pistol grip parts are zinc plated. The heavy gauge barrel is knurled for a better grip. Plunger shaped for 3 way loading, cartridge, bulk filling or filler pump. Posi lock on piston rod for safe grease filling