50Ton 4 Stroke Yellow Hydraulic Cylinder Ram Jack Single Acting Lifting Ram new. 50 Tons Hydraulic Cylinder Jack Solid 4in/100mm Stroke Single Acting Lifting Ram Jack 635cc. This is a new 50 Ton Hydraulic Cylinder Jack. Chromium Plated Surface of Piston. Prolonging the Service Life of Piston. Plunger Has the Function to Retracting Automatically. In order to operate correctly, all oil cylinders need to be connected with solid and flat surfaces. For example, using thin oil cylinders in sandy soil or loose surfaces will cause damage to the oil cylinders. The joint of this product is a ZG-3/8 19 tooth British taper thread. 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.