99Pcs HSS Drill Bit Set | Professional Metric Sizes 1.5-10mm | For Hard Metals & Woodworking

Engineered for demanding professionals, this 99-piece HSS metric drill bit set tackles hard metals and titanium plates with confidence. The high-speed steel construction maintains a sharp cutting edge...
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Questions about this product
- Can these bits drill hard metals and titanium?
- Yes. The HSS steel runs at 62-64 HRC and keeps its edge at high temperature, so it cuts plate steel, alloy steel, and titanium. They also work fine in wood. Use slower speeds and steady pressure on the harder metals.
- What sizes are in the 99-piece set?
- The set spans 1.5mm up to 10mm in metric sizes. Smaller diameters step up in fine 0.1mm increments, then widen toward the larger bits. That range covers most metric holes for fasteners and fittings.
- How do I keep these bits sharp and lasting?
- Drill at the right speed for the diameter and back off when the bit heats up. A little cutting oil on metal reduces wear and work hardening. Wipe them dry after use and keep them in the case to avoid rust.
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