General description 7Pcs Diamond Dry Hole Saw Drill Bits set includes seven different sizes (5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm) designed for drilling through tough materials such as glass, porcelain, tile, ceramic, granite, and marble. These dry tile drills are brazed for easy use without the need for water, making them ideal for various DIY and home improvement projects. Technical specifications Sizes included: 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm Material: Electroplated emery High temperature quenching for enhanced hardness and durability Usage These versatile diamond milling cutters are suitable for a range of applications, including drilling into granite, marble, masonry, concrete, tile, ceramic, glass, and hard plastic.