[High Quality Sponge]: Our interface pads are made of soft and durable sponge, flexible and easy to use between sandpaper and DA / orbital sander, it can effectively reduce vibration. The cushion sponge pad follows the contours and gets closer to the edges to reduce damage. [Hook & Loop Design]: 8 holes on each buffer sponge pad can effectively prevent dust from clogging the machine, with 2 different sides design, one side is hook side stick with sanding discs, the other side is loop side glued with sanding pad, high quality waterproof adhesive between the foam and Nylon Buckle, not easy to tear, suitable for wet or dry sanding. [With Sanding Discs]: the package contains 5 PCS foam buffering pads and 40 PCS of 5 inch aluminum oxide sanding discs (4 pieces each of 40/60/80/120/220/320/400/600/1000/2000 Grit), the grains of the sanding discs are made with a high quality adhesive that is anti-breakage and perfect for grinding all kinds of wood. [Wide Range of Applications]: Soft Density sponge Pads are perfect for polishing uneven surfaces, due to the softness of the sponge, you can get the best results when sanding curved surfaces and improve the grinding results, perfect for polishing, grinding, sanding, etc. on automotive, marine, wood, metal and furniture surfaces. Color: Black Material: sponge Package Contents: 5 x sponge pads 40 x sandpapers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.