Some drill bits are coolant fed; they have a hole or channel for directed coolant feed at or near the cutting edges. Split point drill heads are used for chip clearance and for good centering, ...

Mining and well drilling bits typically feature a threaded connection for attachment to a drill or drillstring and a hollow body through which drill fluids are circulated. Drill fluids are required to ...

With a little care, you can sharpen drill bits without a heavy-duty tool — all that's really needed to do a reasonably good job is a diamond file. And if you're cutting into carbide or hard high-speed ...

Look for a quality brand such as DeWalt, Craftsman (this Craftsman Drill Bit Set from Amazon offers good quality drill bits), ...

New Rock Bits (NRB) specialises in the development and production of high-quality drilling rock bits and components for drilling and mining operations. NRB provides clients with a complete service, ...

For drilling up to 13mm in wood and masonry, you’ll want to select a punchier torque setting, but it copes admirably, especially with good quality bits installed. The 13mm keyless chuck also ...

professional quality drill bits, covering everything from smoothing to shaping) is ergonomically designed; allowing for professional levels of precision. Crafted from a lightweight yet solid aluminium ...