The fine grit paper H&L vacuum disc combines a P-graded aluminum oxide abrasive for outstanding durability and fast cut action with a fiber-reinforced flexible C-weight latex-saturated backing for strength. Water-based stearate No-Fil open coat and vacuum holes help resist loading to ensure durability. Select these vacuum discs for fine grit dry sanding and finishing applications involving aluminum composites fiberglass and wood. For convenient installation and removal the disc features a hook and loop back.