Unxuey 7pcs Hex Shank Masonry Drill Bits, 6.35mm Glass Concrete Bits Set, Spear Head Bit for Ceramic Marble Mirror Glass, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm

Made of hard alloy, this glass drill bIt has very good abrasion resistance and extreme hardness for longer life, titanium coated surface is anti-oxidation and will not fade. Precision unique cross angle design ground spear tip reduces bit skating and walking ,feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily. 1/4” Hex Shank fits into all ordinary hand electric drill or bench drill tools more easily and securely. Suitable for drilling in ceramics, glass, granite, ceramic tile and brick wall, etc. It is suitable for Glass, Ceramic, Tile, Mirror, Plant Pots, Wood, Porcelain, Brick Wall, marble, thin iron plate etc. Note: To improve the service life, it is better to add some cooling liquid, such as water, kerosene or turpentine while drilling. Package includes: 7 pieces fine grade high durable drill bits. Sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm.