Features Buffer sponge pad: sponge material with buffer function can effectively reduce the damage to the product by vibration. Adhesive patch bottom: magic adhesive patch bottom, convenient to use. Scope of application: especially suitable for pneumatic and electric self-cleaning polishing machines and grinders. Various Choices Different types of pillow pads are available to choose from to meet your different needs. EASY INSTALLATION:Vibration proof and noise reducing, easy to install. Specification: Material: sponge. Weight: approx. 15 g / 0.5 oz. Diameter: 125mm/4.9" Thickness: 12mm/0.5" Number of holes: 5 holes, 6 holes, 8 holes (optional). Features: Vibration resistant and noise reducing, easy to install. Bottom with magic adhesive patch, convenient to use. Four types of cushion pads to choose from, which meet your different needs. Sponge material with buffer function can effectively reduce the damage to the product caused by vibration. Especially suitable for pneumatic and electric self-cleaning polishing machines and grinders. Package list: 1 x soft sponge pad. Package List