4PCS 5" Diamond Foam Polishing Buffing Pads Buffer Kit for Car polishing,Sanding,Polishing,Waxing 5 inch pads,The velcro layer is 100mm diameter.Sponges with different colors and softness, Hook and loop systemRing is flexible, bendable and easy to wash and re-use Longer lasting and more durable, faster and easier to use for more accurate results Used for all kinds of coat paints's waxing, polishing and sealing glaze, to clean and improve their lightness; used for auto car detail polishing Used for all kinds of coat paintss waxing, polishing and sealing glaze, to clean and improve their lightness.Makes the buffing and polishing process much easier and faster than doing it by hand.The back of the disk has velcro, so you can easily change the sponge or woolen buffer pad.