4-1/2 in. Steel Demon Corner-Edge Flap Disc 40 Grit steelstakes It is composed of bentonite

It is composed of bentonite clay and butyl rubber to withhold its physical integrity after expanding

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Dimensions:  38" x 2" x 8

4-1/2 in. Steel Demon Corner-Edge Flap Disc 40 Grit steelstakes It is composed of bentonitePRODUCT OVERVIEW Diablo's Steel Demon Corner Edge flap discs feature a premium zirconium blend for up to 10X faster material removal when compared to standard grinding wheels. The flap discs' special flap design offers flexibility and provides for a cushioned grinding effect. Diablo's high performance flap discs combine two steps in one by simultaneously grinding and polishing . Premium Zirconium Blend a superior quality formulation designed for fast