Parker round double acting pneumatic air cylinders convert compressed air into linear motion and allow rear block mounting in automotive applications. They feature stainless steel construction with silver finish to resist corrosion, and aluminium end caps & pistons with precision machining for smooth break-away. These factory pre-lubricated, non-repairable cylinders are equipped with rod bushing reamed to close tolerance for durability. The pistons are precision machined, threaded & loctited, allowing leakproof operation. Choose from a wide range of these cylinders, available in bore diameters up to 1-1/2 inches.