Product size: The product has an outer diameter of 42mm, an inner diameter of 22mm, and a thickness of 2mm. Manual measurements, please allow slight errors. Applicability: The product is suitable for 1/2-inch column faucets, basin sinks or kitchen sinks. Easy to install: Direct replacement without adjustment, perfect compatibility, and high reliability. Product material: The product is specially designed and made of rubber material, with a long service life and not easy to damage. Product list: Product include a total of 10pcs Rubber Washers, which can completely meet your daily use needs and replacement., Manufacturer: The Lord of the Tools