Product Information - Product Name: Masonry Tip Drill Bit Set - Material: Tungsten Carbide - Color: As Shown - Size: 4x 6mm(1/4"), 2x 8mm(5/16"), 2x 10mm(3/8"), 2x 12mm(1/2") - Quantity: 10 Pcs Pack Includes: 4 * 6mm(1/4") Tip Drill Bits 2 * 8mm(5/16") Tip Drill Bits 2 * 10mm(3/8") Tip Drill Bits 2 * 12mm(1/2") Tip Drill Bits Features: - Our porcelain tile drill bits are made of high-quality tungsten carbide material, which is sturdy, and durable for long time use. - U type slot design with fast drilling dust remove, Triangular handle design, operation more stable. - The 3-flats shank ensures you can hold it firmly, without slip and scratching, will not damage the tile glaze. - The universal masonry drill bit set is suitable for drilling in all kinds of materials including tile, concrete, brick wall, glass, plastic, wood, etc.