1/8 inch shank. Silicon Carbide Grinding Stones are designed to grind and etch stone, glass, ceramics, porcelain and non-ferrous metals. Ideal for sharpening, deburring and general purpose grinding on harder materials including stone, glass, ceramic, porcelain, gemstones and non-ferrous metals. Specially designed for working with conic and flat surfaces.
 | For best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto the bit. |
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