Save Water: Replace faulty diaphragms to prevent unwanted water leakage. Quality Material: Made of durable rubber, these diaphragms ensure a long service life, with reliable performance, not easy to deform, tear, break and can be stored for a long time. Universal Compatibility: Suitable for most side entry and bottom entry valves. Valve Diaphragm Washers have a smooth surface, no worry about scratching your fingers. Simple Installation: 1. Disconnect the water supply from the tank and rinse, then unscrew the large plastic cover, remove the sealing film on the cover and replace it with a new one; 2. There is a vertical plastic line on the back of the connector, aligned with the gap between the plugs; 3. Tighten the lid, ensure the float on the arm is in a horizontal position, Restore the water supply. Essential Repair Kit: A set of 2 for handy repairs, economical and convenient.