Mirka Brand - Abralon 8A-240-3000 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. We have a large selection of orbital sanders and backup pads that would go perfectly with this particular abrasive.