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United Abrasives Spiralcool SAIT-LOK Backing Pad (for Resin Fiber Discs) Quick-change backing pad with a spiral face that runs cooler to extend disc life and boost cut aggressiveness. Designed for SAIT-LOK fiber discs—no extra nuts or flanges needed, so changeovers are fast. 5/8″-11 arbor; 5″ sizes (max RPM 15,000).
