Features: Experience efficient drilling with our 5 pieces Double Grooves Alloy Tile Drill Bit Set, designed to quick penetrate hard ceramic tiles while minimizing resistance and enhancing drilling speed. Crafted from high quality alloy material, these drill bits boast exceptional wear resistance and longevity, featuring a professional coating to prevent rust and ensure stability. Ideal for DIY home improvement enthusiasts, professional construction workers, and artisans in ceramics and stone crafts, this set caters to both novice users and seasoned professionals. Perfect for various applications such as home renovations in kitchens and bathrooms, large scale commercial projects, and personalizing art installations requiring precise drilling on hard surfaces. The innovative triangular design ensures accurate positioning without displacement, while the double grooves cooling channels reduce bit temperature, extending lifespans and maintaining high performances. Specifications: Component: Alloy Color: As pictures shown. Size: As pictures shown. 6mm：Length: 10.1mm, Shank dia: 5mm 8mm：Length: 11.2mm, Shank dia: 6.5mm 10mm：Length: 12.5mm, Shank dia: 8.5mm 12mm：Length: 12.6mm, Shank dia: 8.5mm Quantity: 1 set(5pcs) Package Includes: 1 set(5pcs) Tile Drill Bits note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item.