20/50 Ton Hydraulic Cylinder Jack 4″/6″ inch Stroke Single Acting Solid Ram Jack. This is a new 20Ton/50Ton Hydraulic Cylinder. Lightweight design for small workspace. Chromium plated surface of piston, prolonging the service life of piston. Plunger has the function to retracting automatically. Dear friend, Welcome to my store. Wish you have a nice day and happy shopping. If you have any questions or more information about promotion, please leave me a message and we will reply to you as soon as possible. Thanks for your patience. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday. Stable performance, Long service life?