Norton® BlueFire R884P 36 Grit Y Weight Plyweld RR Joint Wide Belt measuring 37" X 75" is made from self-sharpening zirconia alumina abrasive material making it ideal for all metal and wood applications. Belt with polyester waterproof cloth backing offers durability on high-pressure, dry or wet and heavy duty metal applications. The belt cuts aggressively and is sold as 2 per pack.