OTC (4131) 10-Ton Spring-Return Hollow Center Hydraulic Ram Ideal for push/pull applications found in off-highway construction mining and other industries where heavy equipment is maintained Center hole permits extending screws cables etc straight through the ram for versatility of application Chrome-plated piston rods resist wear and superior packing and seals provide high cycle life without leakage 10-Ton capacity 2-1/2 inch stroke and a 49/64 inch center hole diameter Retracted height is 5-5/16 inches and the extended height is 7-13/16 inches