- Set of 9 tungsten carbide-tipped drill bits, designed for drilling hard materials - Includes 7 different sizes: 3 mm, 4 mm, 5 mm, 6 mm (x3), 8 mm, 10 mm, and 12 mm - Perfect cut: clean, fast drilling without chipping edges on tiles, glass, wood, and more - Triangular shank and U-shaped groove for greater stability and efficient dust removal - Premium material: alloy head with high hardness and long service life - Multipurpose: suitable for tiles, ceramics, stone, concrete, bricks, wood, and plastic - Stays sharp longer than conventional steel drill bits - Ideal for DIY projects, renovations, and professional use - It is recommended to lubricate with water when drilling especially hard materials