Set of 10 tungsten carbide masonry drill bits for ceramic, metal and steel (6/8/10/12 mm)

[High Quality] Made of high-quality tungsten carbide, the head is reinforced, extremely hard, difficult to break or bend, with a rust-resistant surface treatment for a long service life. [Multi-Flute Drill Bit] The sharp multi-blade grinding allows for high-speed drilling, even in hard materials, 85% faster than standard drill bits, and the U-shaped groove ensures efficient chip removal. [Triangular Handle] The triangular handle keeps the drill bit securely in place to prevent slippage and movement. Fits most hand drills. [4 Sizes] Four different sizes of masonry drill bits: 4 x 6 mm (1/4 inch), 2 x 8 mm (5/16 inch), 2 x 10 mm (3/8 inch), and 2 x 12 mm (1/2 inch). Different sizes are suitable for different applications. [Applicable] Suitable for most architectural interior design materials, metal, glass, tile, wood, ceramic, stone, concrete, brick, etc. (When drilling hard materials, please use water lubrication)