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Review on Diablo SPEEDemon Spade Bit Cutting Tools in Industrial Drill Bits by Mark Harris

Revainrating 5 out of 5

Effortless drilling

As an electrician, I drill hundreds of holes a week. These bits are sharp, durable, and have a self-advancing screw tip that reduces hand strain.

Pros
  • Impact Strong improves shaft stability and durability
Cons
  • Not bad, but...