Description： 1.It has 5 sizes(6mm, 6mm, 8mm, 10mm, 12mm) in one set, which meet your different needs perfectly. 2.Cross tip design reduces breakout and the bit features a carbide tip for extended bit life.Titanium plating, which is well protected against rust. 3.Can be installed in the general electric hand drill, bench drill, impact drill and so on. 4.Titanium coated for durable and longer life. 5.Suitable for drilling in ceramics, glass, granite, ceramic tile and brick wall, etc.Remember to add water to the materials while cutting or drilling to preserve them from over heating. Specifications: Material: Tungsten steel Surface Treatment: Plating titanium Hex Shank Diameter: Approx. 6.35mm (1/4 inch hexagonal shank) Length: 77mm,77mm,79mm,83mm,86mm/3.03",3.03",3.11",3.27",3.39" Sized :6mm,6mm, 8mm,10mm,12mm/0.23",0.23",0.31",0.39",0.47" Package List: 1Set x Glass Drill Bits(6/6/8/10/12mm）
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