Hard center airway buffs have a center that can be drilled out to any size. These start at 1/2″ and can be drilled out to a 1″ center. These come in Yellow/Blue and white Yellow and Blue have a firm stiffness that are specially treated to give longer life than standard buffs. They cut and color faster and are vented to keep the workpiece cooler. Hard center allows fast mounting to tapered spindel for quick change. Use with any compound. White wheels are softer and are used for a final buff.
