"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. Shaft Diameter in. 1 3/8, Stroke Length in. 18, Max. PSI 3,000, Closed Pin Center in. 28 1/4, Bore Diameter in. 3 1/2. 1/2in. working ports and 1in. pins Induction-hardened piston rods"