Premium Quality: These diamond drill bits that made of diamond and carbon steel with durability and rust resistance are wear-resistant and sharp.
Size: 3mm/0.12", 4mm/0.16", 5mm/0.2", 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7".
Wide Applications: Can be used for granite, ceramic, marble tile, stone, glass, diamond coating and other hard material.
Smooth Cut: Coated with high quality diamond to ensures smooth punching and makes the drilling process easier, precise cutting and no rough edges.
Design: The side slots can help the entry of cooling water and the ejecting of debris from the borehole.
Features: Premium Quality: These diamond drill bits that made of diamond and carbon steel with durability and rust resistance are wear-resistant and sharp. Size: 3mm/0.12", 4mm/0.16", 5mm/0.2", 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7". Wide Applications: Can be used for granite, ceramic, marble tile, stone, glass, diamond coating and other hard material. Smooth Cut: Coated with high quality diamond to ensures smooth punching and makes the drilling process easier, precise cutting and no rough edges. Design: The side slots can help the entry of cooling water and the ejecting of debris from the borehole.  Specifications: Material: Carbon Steel Item Size: 3/ 4/ 5/ 6/ 8/ 10/ 12/ 14/ 16/ 18 mm Quantity: 10Pcs Package Size: 11 * 7 * 3cm / 4.3 * 2.8 * 1.2in Package Weight: 115g / 4oz Package List: 10 * Diamond Drill Bits