Tough, Fast Grinding 100% Polyester Backed Belts in Up To 14 Grits from 36X to CORK in Five Popular Sizes Special Sizes and Grits Available on Request Ask About Our Large User Program CRL Portable Grinding Belts for portable sanders are now an even better deal because of more cost-efficient, space-saving, ten belts per box packaging. They have a 100 percent polyester backing, so you can use them wet or dry. They are available in grits from 36X (Super Coarse) to C0RK (Polishing) to fit most any portable belt sander. Grit: 80X Size: 3 x 21 in (76 x 533 mm) Minimum Order: 1 Box (10 belts) Additional Product Information: Five Standard Sizes: 1-1/8 x 21 inch (29 x 533 millimeter) 3 x 18 inch (76 x 457 millimeter) 3 x 21 inch (76 x 533 millimeter) 3 x 24 inch (76 x 610 millimeter) 4 x 24 inch (102 x 610 millimeter) Most Popular Belts for Glass, and Examples of Their Use: 60X - Extra Rough: Fast Glass Removal (Mitered Edge) 80X - Rough: Quick Contouring (Auto Glass Edge) 120X - Smooth: Seaming and Polishing (Desk Top Edge) 220X - Extra Smooth: Fine Frosted Finish (Glass Shelf Edge) 400X - Fine: Satin Finish (Opaque Edge) CORK - Polish: Smooth Luster Finish Ten belts per box, except CORK, which are sold individually.