This multi-purpose hydraulic cylinder seal kit tool is designed for installing internal seals for external retaining rings commonly found on cylinders. Using this hydraulic tool helps reduce the chance of installation damage. Made from high-quality, corrosion-resistant, and wear-resistant metal, the tool's smooth surface prevents damage to the seals. Installation is easy, requiring only two steps. The hydraulic cylinder sealing tool allows for quick seal installation with minimal effort. The kit includes three different sizes to accommodate various seal sizes. Its compact size makes it convenient to carry. Sizes: * L: 70-165mm (2.75" - 6.49" ROD) * M: 40-70mm (1.57" - 2.75" ROD) * S: 22-40mm (0.87" - 1.57" ROD) Color: Silver Material: Metal Package Contents: * 3 x Hydraulic U-Cup Seal Twistor Installation Tool Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement error allowed is +/- 1-3cm.