Cobalt Series Diamond Hole Saw Drill Bits
Discover the Drilax Cobalt Series diamond hole saw drill bits,
engineered with vacuum brazed technology for long life and precision.
Designed with a 3/8" standard shank, they fit any drill without adapters,
making them perfect for cutting quartz, granite, tile, marble, and glass.
Features & Specifications
| Shank Connection |
3/8" Standard Round Shank – Fits electric & cordless drills (no adapter needed) |
| Cutting Depth |
Up to 1-1/4 inches (ideal for 3cm countertops) |
| Diamond Type |
Vacuum Brazed with Thicker Diamond Coating |
| Body Material |
Solid Alloy Steel with Smooth Finish |
| Cooling |
Elongated Side Slots for Cooling and Material Extraction |
| Materials to Cut |
Quartz, Granite, Marble, Porcelain, Ceramic, Glass, Tile, Countertops, Cement Boards |
| Applications |
Faucet installation, shower heads, countertops, fish tanks, tile projects |
Why Choose the Drilax Cobalt Series?
- ✔ Vacuum brazed diamond coating for extended life and durability
- ✔ 3/8" standard shank fits drills directly – no adapter required
- ✔ Cuts through hardest materials: quartz, granite, marble, porcelain, glass, ceramic, tile
- ✔ Improved cooling and chip removal via side slot design
- ✔ Precision drilling with smooth edges and reduced chipping
- ✔ Perfect for DIY projects and professional installations
FAQs About Diamond Hole Saw Drill Bits
What makes the Cobalt Series different?
The Cobalt Series features a thicker vacuum brazed diamond coating for longer life and
superior cutting performance compared to standard diamond drill bits.
Which tools are compatible with these drill bits?
These bits have a 3/8" standard round shank, making them compatible with nearly all
corded and cordless power drills—no adapter required.
What materials can I drill with the Cobalt Series?
They are designed to cut quartz, granite, marble, ceramic, porcelain, glass, tiles,
countertops, and cement boards up to 1-1/4" thick.
Do I need to drill with water?
While the bits are capable of dry drilling, using water helps with
cooling, dust reduction, and longer bit life.
What projects are these best suited for?
They are commonly used for faucet holes, shower head installations, glass projects,
aquarium building, and countertop modifications.
