ALI INDUSTRIES 3033 40 Grit Disc, 5-Inch x 1/4-Inch, 3-Pack Product Description Gator Grit 3 Pack 5" x 1/4" 40 Grit Extra Coarse Bolt-On Sanding Disc. The bolt on sanding disc is made of quality red resin and is specifically designed for power tool needs such as resisting heat and moisture. The disc fits backer pads with a 1/4'' center hole. For use on wood, metal, drywall, fiberglass, or painted surfaces. From the Manufacturer Gator Grit 3 Pack 5" x 1/4" 40 Grit Extra Coarse Bolt-On Sanding Disc. The bolt on sanding disc is made of quality red resin and is specifically designed for power tool needs such as resisting heat and moisture. The disc fits backer pads with a 1/4'' center hole. For use on wood, metal, drywall, fiberglass, or painted surfaces. Features For Use On Wood, Metal, Drywall, Fiberglass, And Painted Surfaces Resin-Bonded To Resist Heat And Humidity For Longer Life Fits Backer Pads With 1/4" Center Hole From The Brand Name: Ali Industries USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.