These thin wall professional core bits make drilling smooth precision holes, clean and very easy. The 3/8' diameter drill bit pilots the CH GT CROWN for precise cutting work on granite, marble, stone and ceramic tile. The bit fits easily in all electric drill chucks. Drill depth 2'.

Use wet or dry .

We manufacture these high quality super fast crown bits for producing precision holes smooth and clean. The long life of these crowns are perfect for precise cutting work on marble and ceramic tile.