Comprehensive Set: The package includes 3 sets of PU leather cuffs, and 6 rubber sealing rings in 2 different sizes you have ample replacements . : With an inner diameter of approximately 52 mm, a height of 20 mm, and a thickness of 4 mm, the PU leather cuff piston sleeves are designed to fit most model 75 water pumps seamlessly. Materials: Made from high-quality material, these seal rings are sturdy, to breaking, deformation, and fading, long-term reliability for your pump. User-Friendly Installation: Soaking the piston seals in water prior to installation makes it easier to attach them to the pump securely, enhancing your overall experience. Efficient Replacement: These hand water pump parts are designed for easy installation and provide excellent sealing capabilities, allowing your water pump to function effectively again while saving you time and effort. Color: As Shown Material: PU Package Contents: 3 * cowhide bowls 3 sets * large and small rubber pads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.