Mirka Brand - Abralon 8A-240-1000 Grit  6" Foam Backed Grip Discs (Velcro/Hook & Loop)  Abrasive Sanding Discs - Brand New Box of 10 Discs Mirka Grip Discs = Velcro/Hook & Loop Backing Combines benefits of abrasive cloth and non-woven products. Constructed with a fabric face, foam center, and a grip backing. Abrasive grains are bonded evenly to the fabric face. Openings in the fabric allow water, solvent and air to flow freely around the abrasive. Works especially well when sanding contoured surfaces, corners and sharp edges. Open cell design holds large amounts of water or solvent for lubrication and cooling. Foam center also provides for even surface pressure that helps eliminate finger marks when hand sanding Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.