Diamond Holesaw 3 - 50mm Core Drill Cutter Hole Saw Tile Glass Ceramic Porcelain. -3mm diamond holesaw: about 3mm shank. -4mm diamond holesaw: about 4mm shank. -5mm diamond holesaw: about 5mm shank. -From 6 to 50mm diamond holesaw: 6 - 8mm shank.
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