The washers are made of rubber materials and are designed to be and reliable. They are perfect for isolating hangers and other household items from the wall, preventing scratches and noise. The washers are also easy to install and can be used for a variety of purposes. Features -Color:Black -Material:Rubber -Size:2.50X2.50X0.60cm/0.98X0.98X0.24in -Inner hole diameter: 10mm, outer diameter: 25mm, height: 6mm -Provides effective isolation for fastening, preventing them from directly touching the wall. -Minimizes the risk of scratches and reduces noise caused by items rubbing against the wall. -Suitable for noise reduction, excellent abrasion resistance that creates a smooth working environment -Versatile in its use, suitable for a variety of purposes, suitable for machinery equipment, household appliances, etc. -Made from and reliable rubber materials, ensuring performance and reliability. Package list: 25 x washers