Our Review/Thoughts

I think it worked better than a MK black bit I used last time

get the bluerock drill instead of the steel dragon drill

CUTS as fast as more expensive blades

The steel dragon drill is only one speed and doesn't have a safety clutch, when the tooth broke loose from my first diamond core drill the drill body spun around and nearly broke my arm

Cored sixteen 9inch holes through eight inch concrete with rebar, this bit worked like a champ

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