Highly sharpen, sharp blade cutting smooth no burr, no edges. 1PC 3Flutes Countersink Drill Bits 20.5/25/30mm 90 Degree HSS Chamfering Cutter. Shank: 1/4in ( 6.35mm ). 6mm-100mm Diamond Hole Saw Cutter Drill Bit Set for Tile Glass Ceramic Marble.
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