Make your tiling and masonry projects a breeze with the Onmaiwei Diamond Brazed Core Dry Drill Bit, designed to drill clean, precise holes in tough materials like porcelain tiles, marble, glass, and granite — all without the hassle of water cooling. Available in sizes from 6mm to 100mm, this versatile drill bit delivers professional-grade performance whether you’re a DIY enthusiast or a skilled craftsman.
Thanks to advanced vacuum brazed technology, this core drill bit boasts a working life up to 3-5 times longer than typical electroplated bits, saving you money and downtime. The built-in wax in smaller bits (6mm-12mm) provides effective cooling during dry drilling, while the high diamond exposure rate ensures aggressive, fast drilling with minimal chipping and heat buildup.
With its black diamond-coated surface, this drill bit offers excellent durability and a smooth finish — perfect for creating holes in ceramic tiles, granite slabs, marble countertops, stone walls, and more. Get sharper results faster and with less mess!
Why choose Onmaiwei Diamond Core Drill Bits?
Dry drilling with wax cooling for bits 6-12mm — no water needed
Vacuum brazed for longer life & superior durability
Less chipping, reduced heat, and cleaner hole edges
Suitable for porcelain, marble, granite, glass, and ceramic
Wide size range from 6mm up to 100mm for any job
Upgrade your toolkit with this premium diamond drill bit and enjoy precise, efficient cutting every time!
