The Crowne Needle - 8mm (5/16") diamond drill bit offers a versatile solution for drilling precise, clean holes in a variety of hard materials using your impact driver or standard drill. Its 8mm diameter is ideal for numerous applications, while the superior diamond coating ensures chip-free results and long-lasting performance. This bit features a 1/4 inch hex shank for quick and secure connection.
Problem: Many projects require holes that are slightly larger than what a 6mm bit can provide but still demand precision and a clean finish. Using standard drill bits on hard, brittle materials often leads to inaccurate holes, chipping, cracking, and wasted materials.
Solution: The 8mm Needle diamond drill bit bridges the gap, providing the perfect balance of size and precision. Its high-quality diamond coating and dry-cut technology, combined with the controlled power and speed of your impact driver or cordless drill, allow for controlled drilling in tile, porcelain, ceramic, granite and other hard materials.
Installing various bathroom and kitchen fixtures.
Creating holes for medium-sized screws and anchors in tile and stone.
Drilling precise openings for electrical wiring or small pipes.
Enlarging existing holes for a perfect fit
Porcelain Tile
Ceramic Tile
Glass Tile
Natural Stone (Granite, Marble, etc.)
Engineered Stone (Quartz, etc.)
