Product Dimensions: Outer diameter 18mm, inner diameter 12mm, thickness 2mm. Manual measurements, please allow for slight errors. Compatibility: Compatible with Hansgrohe bathroom faucets Material: This product is specially designed with rubber for a long lifespan and resistance to damage. Easy Installation: Direct replacement without adjustment, ensuring perfect compatibility and high reliability. Product include a total of 10pcs Washer, which can completely meet your daily use needs and replacement., Manufacturer: YINETTECH