- Made of heavy-duty metal construction, our hydraulic cylinder jack is durable and designed for long-lasting use. Paint spraying at the surface, prevent scratching and corrosion. - Our ram hydraulic cylinder is designed to provide reliable support during operation. No stuck when lifting, large 20 T/44000 LBS tonnage, enough stroke(100 mm/4 inch). - Quick connecting head with dust cover, preventing the jack's inside from dust, features firm connection with no leakage. A portable handle increases flexibility and convenience. - The hydraulic ram cylinder features a smooth surface ...