Lincoln Lubrication 1134 Heavy Duty Pistol Grip Grease Gun with Whip Hose and Rigid Pipe Rugged cast pump head for strength and durability Tools jam-proof toggle mechanism prevents binding or accidental bending of plunger Tools 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