Widely Used - Masonry drill bit can easily penetrate various materials like glass, tile, ceramic, brick, light concrete, wood, plastic, cement, marble, wall, mirror, block, stone, porcelain floor, granite, cinderblock, window, travertine etc.Efficient Design - Triple-cornered shank handle is designed for preventing slipping and allows drill bit to be held tightly and stably in power drill. U type slot design makes perfect chip removal ability with overall sandblasting treatment. No broken edges, no tremors, small incision resistance, fast hole speed, easy chip removal.Material & Dimension - High quality drill bit set made of tungsten carbide that prevents bit cracking and provides a longer life, sturdy and durable.Warm Tips - The bit is resistant to high temperature at about 1000C. However long session of work over 1000C may cause the head to burn out. Therefore, adding water is required when drilling on high hardness material. These drill bits can be used in charging drill, hand drill, bench drill etc. DO NOT use impact mode of drill or hammers.Colour: silver + blackMaterial: cemented carbidePackage Contents:4 x 6mm drill bits2 x 8mm drill bits2 x 10mm drill bits2 x 12mm drill bitsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.