A. Based on cloth, its service life is more than twice as long as that of the red sanding disc based on paper. B. The flannelette is reliable. The design of the thickened and lengthened Velcro loop side and hook side allows for a relatively secure connection with the sander, and the sandpaper is less likely to fall off during random orbital sanding. C. It adopts a diamond-shaped anti - clogging heat dissipation design. It is a 5 - inch 8 - hole combination Velcro random orbital sandpaper. The blue zirconia abrasive is of a certain quality, which helps avoid frequent replacement of the sanding disc. Each box contains 70 pieces. D. After special processing, the cloth base is less likely to tear and the abrasive is less likely to fall off. Therefore, the sanding effect is slightly coarser than that of the red sanding disc (because the red sanding disc changes from 240 grit to 800 grit after a few minutes of sanding). It can be used with water (but should not be soaked in water). E. It has a universal design and can be pasted on an orbital sander. It can sand various items such as wood, metal, houses, furniture, fences, plastics, bamboo, walls, etc. F. Color: Blue G. Material: Alumina H. Size: Approximately 125 mm I. Packaging contents: - 70 sanding discs (10 pieces each of 80 grit, 100 grit, 120 grit, 150 grit, 180 grit, 240 grit, and 320 grit) J. It only includes the above - mentioned packaging contents, and other items are not included. K. Note: Light and different displays may cause slight differences between the color of the item in the picture and the actual item. A measurement error of +/- 1 - 3 cm is allowed.