General description The 10pcs Multifunction Carbide Hex Shank Drill Bit Set is designed for drilling through a variety of hard materials including porcelain tile, ceramic, mirror, concrete, brick walls, and glass. Made from professional alloy steel, these drill bits offer high hardness and durability, ensuring they outlast ordinary steel drill bits. Technical specifications Material: Professional alloy steel Tip: Tungsten carbide for efficiency and longevity Set includes 10 drill bits in 7 sizes: 1/8" (3mm), 5/32" (4mm), 3/16" (5mm), 1/4" (6mm), 5/16" (8mm), 3/8" (10mm), 1/2" (12mm) Usage Ideal for drilling ceramic tiles, glass, marble, and mirrors For hard materials, use water for lubrication to extend the life of the drill bit Maintain a vertical position while drilling for best results Not suitable for drilling into hard tiles Other information Sharp chamfer design for easy positioning and faster drilling speed Low fluctuation frequency and high efficiency Essential tool for DIY