The Vevor Hydraulic Top Link Cat. 1-1, with a maximum working pressure range of 20/18 MPa, generates 3.5 tons (7716 lbs.) of pushing force and 2.3 tons (5070 lbs.) of pulling force without mechanical gears or levers. Featuring bidirectional check valves with locking blocks, it ensures enhanced sealing and precision control, ensuring minimal hydraulic oil backflow and maintaining piston rod stability even after the pump stops. Made entirely of robust 45# steel with a corrosion-resistant paint coating, it withstands harsh environments like muddy terrain and high temperatures. The rotating piston rod allows flexible installation on various tools. With a 0.8 in. (Φ19.4 mm) connection hole diameter, this double-acting hydraulic cylinder is compatible with Cat. 1-1 tractors, enhancing operational efficiency. Note: Securely tighten hydraulic hose fittings to prevent oil leakage.