General description Dry diamond hole saw drills are designed for precision cutting in the hardest materials such as glass, porcelain, tiles, ceramics, granite, and marble. This complete kit includes seven dry drill bits, ranging from 5mm to 16mm, catering to various drilling needs without the requirement of water. Technical specifications Sizes included: 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm Material: Electroplated emery High temperature quenching for enhanced hardness and durability Usage These multi-purpose diamond cutters are suitable for a variety of applications, including drilling through granite, marble, masonry, concrete, tiles, ceramics, glass, and hard plastic.