Enerpac® hydraulic cylinder, double-acting hydraulic return hollow plunger, RRH series, 103 ton advance, 68 ton retract capacity, 6-1/2 in bore, 10.13 in stroke length, 18.13 in retract, base mounting, 3/8-18 NPTF port, 4.97 in rod dia, 10,000 psi pressure, steel housing material, baked enamel, 8.38 in OD x 28.25 in H. Enerpac® RRH10010 Double-Acting Hydraulic Return Hollow Plunger Hydraulic Cylinder, 103 ton Advance, 68 ton Retract Capacity