o Manufactured utilizing a multilayer, heavy duty vulcanized fiber backing o Covered with a formulated bond coat to resist loading, glazing and grain stripping o Powerful, versatile, flexible, safe and economical o Outperform and outlast conventional 2-ply and 3-ply cloth backed discso Type "R" quick change screw on fastening systemso Zirconia (ZIRC)o Extremely hard abrasive alloy sharpens itself in use, delivering outstanding cutting rates and maximum useful lifeo Advanced bond extends disc life by minimizing grain shredding, while promoting cool grinding action reducing glazing and loadingo Most effective in high production applications where cutting rates are monitored