Capacity: 16 oz.First Choice Of Top Mechanics And Industrial Maintenance ProfessionalsDesigned For Rough Treatment On The JobEasily Loaded By Suction, Filler Pump Or CartridgeDevelops Up To 10,000 psiJam-Proof Toggle Mechanism To Prevent BindingPrecision Fit, Hardened Plunger For Longer LifeRugged Cast Iron Pump Head For Superior PerformanceClean-Out PlugExclusive "Flip-Over" Follower To Eliminate Grease By-PassHeavy Duty Spring For Prime RetentionLocking Follower Rod For Easy Loading And Priming