Mounted stone set- 5 Pc Made of vitrified aluminum oxyde. 5-piece round, flat cylinder and taper cone shape drilling set. May be used in any 3/8-in. or 1/2-in. drill. Also convenient for use in flexible shafts. Variety of shapes and sizes to shape, grind. etch, and deburr hard metals, glass, tile and masonry. Includes drill sizes: #2170, #2171, #2172, #2173 and #2174.
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