Type: Collet Chuck. 1PC/PCS Collet Chuck. Shank: 1/2in(12.7mm). 6mm-100mm Diamond Hole Saw Cutter Drill Bit Set for Tile Glass Ceramic Marble. 1PC 3Flutes Countersink Drill Bits 20.5/25/30mm 90 Degree HSS Chamfering Cutter.
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