Do it Black Cone Faucet Washer & Friction Ring is designed for basin supply, providing reliable performance with each card containing 2 washers and 2 friction rings. These washers are made of durable black rubber and come in various sizes to fit different faucet types. The cone-shaped washers feature outside diameters ranging from 7/16 inch to 1/2 inch and are packaged individually on cards for easy use. Whether you need a washer with a 7/16 inch ID by 3 5/8 inch OD or a 3/8 inch ID by 23/32 inch OD, this product a practical solution to maintain your faucet’s functionality and prevent leaks. Model Number: