"The Prince Tie-Rod Cylinder is made to handle the most demanding applications. With 70 plus years of American-made know-how they use a high-strength ductile iron piston, butt, gland, and clevis, plus urethane seals in a honed tube that allow them to handle 3000 PSI continuous working pressure. Aircraft quality paint provides lasting performance. Seal kits are also available sold separately. Stroke Length in. 18, Shaft Diameter in. 1 3/8, Closed Pin Center in. 28 1/4, Bore Diameter in. 3, Max. PSI 3,000. 1/2in. working ports and 1in. pins Induction-hardened piston rods"