Features Sponge material, with buffering function, can effectively reduce the damage of vibration to the product,Simple to install no hassles. Sanding Soft Pad Four types of cushion pad for your choice, meet your different needs,More professional and practical. Especially suitable for pneumatic and electric type of self-cleaning polishing machine and grinding machine. Sanding Soft Pad Shake-proof and noise reduction, easy to install,high strength, high cost performance. Magic adhesive patch bottom, convenient to use. Specification: Material: Sponge Weight: Approx. 20g/0.7oz Diameter: 150mm/5.9inch Thickness: 11.5mm/0.5inch Hole Quantity: 6 holes, 9 holes, 15 holes, 17 holes (Optional)  Package List: 1 x Soft Sponge Pad Package List