1 Inch Diamond Zero Tolerance grinding Drum wet polishing drum core bit granite

(b) 7 Pieces of 1" / 25 mm DRY Polishing Drum for granite marble concrete sink / basin hole / sink cutouts / tight radius (with 5/8"-11 Thread arbor). (c) 1 Piece of 1" (25 mm) Diamond Brazed / Electroplated Zero tolerance grinding drum wheel for sink hole inner coarse grinding / polishing (5/8"-11 Thread).

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