Excellent for making clean and accurate holes in glass, tile, marbles and ceramic. 8mm 1, 10mm 1, 12mm 1, 14mm 1,16mm 1, 18mm 1, 20mm 1, 22mm 1, 25mm 1, 28mm 1, 30mm 1, 35mm 1, 40mm 1, 45mm 1, 50mm 1.
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