The RH: 30-200T D/A series has interchangeable piston head inserts. The built-in safety feature prevents over pressurization of the retract circuit. Its plated piston rod resists wear. The superior packing provide high cycle life without leakage. Each cylinder has 9796 3/8" NPTF female half couplers. Product accessories include lifting handles, seal kits, and standard couplers. However, its center-hole accessories include adjusting screw, jack screw, pushing adapter, screw cap, speed crank, and speed nut.