Diamond Drill Bit Set 10Pcs Hole Saw 8-25mm-50mm for Diamond Coating Carbon Steel Glass Ceramics Porcelain Tile Brick Marble

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.