7 sizes:The drill bit set has 7 different sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm. These glass drill bits are perfect for various tasks drill bit, with high drilling accuracy, and can be installed on electric drills. High-quality materials:Made of cemented carbide head material, low resistance, high hardness, improve the work efficiency and can maintain a longer cutting edge time than ordinary steel drill bits. U-shaped groove and triangular handle:The U-shaped spiral is smooth and flat, and the drilling is smoother.Triangular shank design makes clamping tighter without slipping. Spear tip design:This heavy duty tungsten carbide tipped drill bit is sharp, easy to locate, stable drilling, fast, does not break the boundary, and the opening is neat and smooth. Widely used:The drill set co Suitable for drilling ceramic tile, concrete, ceramic tile, brick, wood, plastics, glass, masonry and other materials. It is widely used in home decoration, manual DIY and other scenes. Product
