(a) 1 Piece of B13 (1/2" / 13mm) for 13mm high / thick stone or travertine or concrete countertop / tile edge touter bit to do half / roundover / demi bullnose (with 5/8"-11 female Thread arbor). -Ideal speed (of polisher / grinder) capacity is 4000 RPM, Not be higher than 5000 RPM.
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