Interchangeable piston head inserts provide versatility of application. 30, 60, 100 Ton Double-Acting Models Feature Threaded Collar Built-in safety feature prevents over pressurization of the retract circuit. Plated piston rod resists wear; superior packing provide high cycle life without leakage. Corrosion-resistant standpipe has “Power Tech” treatment. Each cylinder has 9796 3/8″ NPTF female half couplers. The 60 ton thru 200 ton steel models are equipped with removable carrying handles.