12pcs Masonry Drill Bits Set Drill Bit Set Triangular Handle Multifunctional Dri The masonry drill kit is made of exquisite non-rusty plastic packaging, beautiful and exquisite, convenient for and carrying.Multi-masonry drill bits are made of high-quality tungsten carbide. It has a variety of properties such as durability, rust resistance and abrasion resistance, remain sharp for a long time make the drilling much more easier, less effort and work with a minimum of pressure.Anti-skid triple-cornered handle head design is firm in operation, and the flashlight griping does not slip. Special U groove drill design speeds up chip removal, improves work efficiency and saves time and effort. A spear-pointed tip design gives this product greater and piercing . Like a hot knife thru butter The drill bit can be installed and used, cordless electric drill general-purpose, bench, electric drilling and hand drill. The drilling speed of the Multi-material Drill Bit should be slow, especially in the beginning of drilling. Recommended speed of drill set: 100-800 / MIN, the larger the diameter, the slower the speed requirement.Multi-Purpose carbide bit can penetrate through masonry, tile, glass, wood, plastic, ceramic, terracotta, brick, concrete, stucco, brick, cinder block, thin steel, laminate flooring, garden pot, marble, pickguard, mirrors, windows, etc. Please try to keep the drill vertical and WATER or COOLANT for lubrication when drilling.Colour: orangeMaterial: cemented carbidePackage Contents:1 * 3mm (1/8inch) drill bit1 * 4mm (1/6inch) drill bit1 * 5mm (1/5inch) drill bit3 * 6mm (1/4inch) drill bit3 * 8mm (5/16inch) drill bit2 * 10mm (3/8inch) drill bit1 * 12mm (1/2inch) drill bitOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.