
High Quality Material Made of hard alloy, this 6mm glass drill bit has very good abrasion resistance and extreme hardness for a long service life. The titanium coated surface is anti-oxidation and does not fade. 6mm Tile Drill Bit Tungsten Carbide Tile Drill Bit 6mm Glass Drill Bit, 4.5mm Handle Diameter, All Round Shank 1/6". Precise and Smooth Hole Excellent for clean and precise drilling in glass and tiles. The fine edge of the drill bit and the hole is smooth and complete, leaving no burrs. Wide Range of Use These 6mm tile drill bits are ideal for drilling holes in glass, tiles, ceramics, marble, brick walls and other hard and brittle materials. (Not suitable for concrete walls) Perfect for Tiles - They are perfect for tiles! Can be centered to the point and drill clean holes! I drilled 20 holes in the tiles with a drill and I didn't feel any sensation wear and tear.