25 pack - 1/2" x 18" 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

· Best for wet applications

o   Light rust or oxidation removal

Choosing a Backing Weight

o   Final polishing before coating or plating

blending and deburring applications

medium-duty tasks on flat or slightly contoured surfaces

or make custom belts for your job

· X-weight poly/cotton blend backing

o   Pre-polishing metal surfaces

weld grinding

·         Can be used on other materials when needing something more aggressive

· Topically infused Grinding aid to help reduce heat and last longer during aggressive applications