Features: internal plunger threads rod wiper seals out dirt and contamination high strength steel construction from gun drilled solid bar high flow 3/8in nptf couplers collar thread protectors one piece high grade alloy bearing for side load protection and long life polyurethane cup seal provides for optimum performance industrial hard chrome plated ram helps prevent rust and corrosion solid steel cylinder body ideal for pushing and pulling maximum working pressure: 10,000psi/ 700 bar