Universal: Diamond drill bit sets are designed for working with such materials as stone, granite, marble, porcelain, ceramic & hard tile, and more. No-Fuss Compatibility With Major Drills: The diamond drill is designed in a firmly hex shank, which is compatible with most machines, such as hand drills, angle grinders, and bench drills, also can be matched with side flutes help to remove debris and drill holes smooth and fast; Depth mark is also useful for precise project.
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