The drill bit set is applicable for ceramic tiles, glass, granite, etc. It provides smooth and accurate drilling, the titanium coated surface is anti-corrosion and will not rust easily. Smooth drilling: The sharp cutters cut smoothly without leaving burrs, and the drilling speed is fast. Sturdy and durable: The tungsten steel cutter is sharp and wearable; it is far more durable than ordinary cutter. The titanium coated surface is anti-oxidation and will not fade. Won’t break porcelain: The drill bits are especially for glass, ceramics, tiles and other hard and brittle work surface, suitable for accurate centering drilling, they will not break the porcelain. Specifications Hex Shank Diameter: 6.35mm (1/4") Cutting bits length: 3/4/5/6/8/10mm Handle length: 68.6mm, 69.7mm, 75mm, 75.5mm, 80 mm, 84mm Handle diameter: 2.5mm, 3.1mm, 4mm, 4.5mm, 5.4mm, 6.9mm Cutting bits material: tungsten steel alloy Handle material: carbon steel Package includes 6 * glass drill bits 1 * user manual
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