Pistol Grip Heavy-Duty Grease Guns, 14.5 oz Cartridge, 5 in Extension/Coupler

Features: Rugged cast pump head for strength and durability | Jam-proof toggle mechanism prevents binding or accidental bending of plunger | Exclusive Flip-Over" follower allows a superior seal for either cartridge or bulk loading applications | Tough, resilient and impervious to lubricant | Extra-heavy follower spring insures positive priming and uninterrupted pumping action | Accessible check valve allows easy cleaning without gun disassembly | Precision fit and hardened plunger prevents lubricant bypass, resists scoring for longer life | Follower rod locks into follower to force prime