MAIN FEATURES HIGH-QUALITY MATERIALS It is made of high quality YG6X alloy as raw material. The process of oxynitriding of the cutter head strengthen the drill hardness. UNIQUE CROSS ANGLE DESIGN Small incision resistancefeature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily. WIDE USAGE Professional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plate, mirrors and glass. Remember to add Water or coolant when drilling. 5 DIFFERENT SIZES Suitable for your different needs.It Can be installed in the general electric hand drill, bench drill. The machine drill clamp range is 10mm and above. SPECIFICATIONS MATERIALS Cemented Carbide PACKAGE CONTENTS Universal Drilling Tool × 53mm+4mm+5mm+6mm+8mm NOTE Due to manual measurements, please allow slight measurement deviations. Due to the different display and lighting effects, the actual color of the item may be slightly different from the color displayed in the Drill bit set: This set includes common specifications, 3mm, 4mm, 5mm, 6mm, 8mm. Suitable for electric drills, electric drills and bench drills. High-precision and durable drill: The triangle drill is made of high-quality alloy, with high hardness, and the drill is pointed, not easy to be damaged or broken. The non-slip triangle handle is designed for firm operation and does not slip when drilling. Main body: Grinding the main body of the drill bit, smooth chip removal, durable and long service life. Unique cross angle: low cutting resistance, stable drilling, fast speed, no edge breaking. The opening is neat, smooth, without broken edges, without tremor, and not easily broken. Wide range of uses: professional glass and tile drill bits provide smooth and accurate drilling on ceramic tiles, marble, thin iron plates, mirrors and glass. Remember to add water or coolant when drilling.