The Lube-Shuttle One Handed Grease Gun features a zinc plated steel barrel for 400g Grease Cartridges. Its ergonomic pistol grip design allows for one-handed application. The unqiue Lube-Shuttle allows for the re-usage of the cartridge due to its tool free opening via a screw cap. The design also boasts optimum use of all grease in the cartridge due to its fast, clean loading and unloading without the need to open the gun.