The protective cover extends the life of the sanding pad To protect your plate Nylon sticker. The protective disc is fixed the grinding disc. Color: Black Material: Sponge Size: 150 mm Package Contents: 10 x Protective Pads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.