Red Label Abrasives 3 X 21 Inch 400 Grit Silicon Carbide Sanding Belts, 8 Pack - Sander Belts - Amazon.com
Bi-directional sanding belts feature butt-splice construction for smooth running in both directions on belt sander. • Designed for superior performance on wood, metal, plastic, fiberglass and other materials •Open-coat aluminum oxide abrasive