Brand Name: ACE | Grit: 150 Grit | Grit Type: Fine | Length: 4.5 in. | Material: Aluminum Oxide | Number in Package: 5 pk | Packaging Type: Boxed | Wet or Dry: Dry | Width: 4.5 in. | Recommended Surface: Multi Surface These premium aluminum oxide grain sanding sheets are manufactured with the highest standards in the industry and are designed for heavy duty sanding and grinding of wood, metal, fiberglass and painted surfaces. The resin bonding system resists heat and moisture, which extends the useful life of the sanding sheets. | For use on wood, metal, fiberglass, and painted surfaces | Resin bonding locks grain to the paper for longer life | The premium P-grade aluminum oxide grain offers a consistent scratch pattern and creating a finer finish | The pressure sensitive stick-on holding system holds securely without slipping, tearing, or wrinkling