Save water: Replace defective 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 sidemounted and bottommounted valves. Valve diaphragm washers have a smooth surface, you don't need to worry about scratching your fingers. Easy installation: 1. Disconnect the water supply from the tank and rinse, then unscrew the large plastic cap, remove the sealing film on the cap and replace it with a new one; 2. There is a vertical plastic line on the back of the connector, which is aligned with the gap between the plugs; 3. Tighten the cap, make sure the float on the arm is in the horizontal position, restore the water supply. Important repair kit: A set of 2 for practical repairs, economical and convenient.