Product Details: The Velvac 6" x 3" Spring Return Tailgate Lock Air Cylinder is the perfect solution for securing your tailgate. This air cylinder is designed to provide reliable and secure locking of your tailgate. It features a 6" bore and 3" stroke and operates at a standard pressure of 100 psi, with a minimum of 90 psi and a maximum of 150 psi. The cylinder is constructed with a 303 stainless steel shaft, 5/8" - 18 threads nitrile "O" rings and a UHMW polyethylene wear band for added durability and longevity. This air cylinder is the perfect choice for keeping your tailgate secure and safe. FleetPride is your First Click in Heavy Duty®.