Ref :
51149
4-1/2" (114 mm) Dia. Disc Sander Backing Pad
Medium Density, Includes 3/8"-24 to 5/8"-11 Female Threaded Adapter
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Thermoplastic pad accepts abrasive discs with 7/8" (22 mm) center hole.
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Fins help expel heat from disc pad extending disc life.
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Flange nut included.