Lincoln Lubrication 1133 2-Way Loading Lever-Action Grease Gun with 18" Whip Rugged cast pump head for strength and durability. Jam-proof toggle mechanism prevents binding or accidental bending of plunger. 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.