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Benchmark Abrasives 4.5" Air-Cooled Poly Pad Resin Fiber Disc Backing Pad for Grinding Cutting Polishing Sanding Woodworking Carving Shaping: Amazon.com: Industrial & Scientific
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4-1/2" SPIRALCOOL™ SAIT-LOK™ Backing Pad for Resin Fiber Discs with 5/8"-11 Arbor and 15,000 Max RPM
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