4" x 8", Hydraulic Double Acting Tie Rod Cylinder, 4" Bore Diameter, 8" Stroke, Rod Diameter 1-1/4", 2,500 LB PSI Maximum Pressure, Retracted Length 20-1/4", O-Ring Static Seal & Piston Seal Is 2 Back Up Rings + O-Ring, NPT Ports, Black Finish Includes Pin & Clips.