The 125mm interface pad is made of high-quality sponge material, durable and soft, flexible and strong. The structure conforms to the sanding pad, making it resistant to deformation or breakage even after long-term use. The soft cushion helps reduce vibration from the grinding tool, improving the grinding performance and assisting in polishing, grinding, and other tasks.Practical design with two different sides: one side features a black hook surface for attaching sandpaper, while the other side has a white loop surface for attaching sanding pads. The hook and loop system allows compatibility with various sanding machines and polishers for different applications. Note: Not compatible with self-adhesive sandpaper.5 inches (125 mm) in diameter, 0.47 inches (12 mm) thick, with 8 holes. Hole diameter is approximately 0.39 inches (nearly 10 mm). Designed to fit sanding or polishing discs of corresponding size.Versatile and effective: soft density cushioning pads enhance disc support, improve abrasive cutting efficiency, and allow for tighter edge sanding. Helps protect backing pads from damage. The hook and loop design also resists dirt and debris buildup, helping to extend the life of your machine. Suitable for polishing uneven surfaces on materials such as wood and metal.Type: 8 holes Color: Black Material: Sponge Size: Diameter: 5 inches / 125 mm Thickness: 0.47 inches / 12 mm Hole diameter: Approximately 0.39 inches (nearly 10 mm) Package Contents: 10 x Hook and loop soft sponge cushions Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement allows an error of +/- 1-3 cm.