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πŸ”© bosch hc4021 speed x spline rotary logo

πŸ”© Bosch HC4021 Speed X Spline Rotary Review

3

Β·

Excellent

Revainrating 5 out of 5Β Β 
RatingΒ 
5.0
πŸͺš Industrial Drill Bits, πŸ”ͺ Cutting Tools

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Description of πŸ”© Bosch HC4021 Speed X Spline Rotary

Tungsten-carbide tip provides superior wear resistance in tough applications. Active-centering tip for optimum guidance when drilling in concrete and reinforced concrete. Large flute volume for fast drilling, dust transport and less clogging. Narrow flute back for reduced friction between bit and material.

Reviews

Global ratings 3
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Type of review

Revainrating 5 out of 5

Featured in Drill Parts & Accessories

I'm impressed. This went into a 100-year-old concrete foundation, for example to install anchor bolts for drilling in wood. Drilled the 24th hole as fast as the first. Recommended.

Pros
  • Power & Hand Tools
Cons
  • Off Style

Revainrating 5 out of 5

Well made slotted drill bit for concrete and masonry

Very strong slotted bit for concrete and masonry. We still use old fashioned (non sds) spline bits and this is a very good buy. Suitable for Bosch/B&D rotary hammers etc. with slots.

Pros
  • Masonry bit
Cons
  • I'll write later