The TECAIR450 is an air operated pistol style grease gun with a 50:1 ratio air motor that delivers 5000psi grease pressure at 100psi air pressure. A single shot trigger delivering 1cc per shot allows controlled delivery and prevents over greasing. Supplied standard with a rigid extension and 4 jaw hydraulic connector this gun can also be used with flexible extensions. Tecalemit's 450g barrel design is suited to cartridge or bulk fill and features a coarse machined thread to eliminate cross threading and a strong one piece follower rod with key hole lock for safety and reliability.