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: 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7", 20mm/0.79", 22mm/0.86", 25mm/0.98", 50mm/1.97".
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: 8/ 10/ 12/ 14/ 16/ 18/ 20/ 22/ 25/ 50 mm
Quantity: 10Pcs
Package Size: 9 * 8 * 5cm / 3.5 * 3.1 * 2in
Package Weight: 210g / 7.4oz

Package List:
10 * Diamond Drill Bits