25 pack - 3/8" x 13" Polyester Backed Aluminum Oxide Belts (Best for: Wet Applications)Best for wet applications Can also be used for more aggressive sanding Y weight polyester backing Wet & Dry applications Choosing a Grit Coarse Grits (24 80): For heavy material removal, weld grinding, or shaping. Medium Grits (100 180): For blending, deburring, and intermediate smoothing. Fine Grits (240 400): For finishing or preparing for polishing. Super Fine (800 1200): For mirror polishing or fine detailing. Choosing a Backing Weight J Weight if

Non-Ferrous and Exotic metals

·         Medium (Maroon) is equivalent to 120-150 grit

·         Fine Grits (240-400): For finishing or preparing for polishing

·         X-Weight for versatile

· Medium Grits (100-180): For blending

·         Can be used on a large variety of materials

Choosing a Grit

· Y-weight polyester backing

·         Can be used on a variety of materials when needing something aggressive

·         Scrim backing

or sanding curved surfaces

it can be used for cleaning