Top of the line grease gun designed for heavy industrial applications Solid aluminium grease gun head fitted with air bleeder & bulk loader valves 1.2 mm thick steel barrel with heavy duty follower spring, CNC machined head & rolled threads for fast & easy reloading Multiple Loading: Cartridge, suction fill & filler pump via the bulk loader Variable stroke feature built-in for usage in confined spaces Resists back pressure, especially useful in chain tightening of earth moving equipment