Our new NorZon BlueFire belts raise your zirconia alumina grinding to the industry's next level. No other zirconia alumina belt will give you the performance-to-price ratio and long life that these belts will with their improved bond, backing, and consistency. Choose NorZon BlueFire R887 for foundry, investment castings, and metal fabrication and NorZon BlueFire R884 for foundry, primary metal, and wood/floor sanding.