(a) 1 Piece of B20 (3/4" / 20mm) for 20mm high / thick stone or travertine or concrete countertop / tile edge touter bit to do half / roundover / demi bullnose (with 5/8"-11 Thread arbor). (b) 1 Piece of V20 (3/4" / 20mm) for 20mm high / thick stone or travertine or concrete countertop / tile edge touter bit to do Full bullnose (with 5/8"-11 Thread arbor).
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