Review on 🔩 Efficient CooPee Rotary Drilling Concrete Masonry for Precision Construction by Brandon Reid

The bits in this set are ok. Haven't used them long enough to comment on their durability, but so far they seem to be doing the job. The plastic case is pretty poor and doesn't hold the bits very well. When this product arrived I could already hear all the parts hanging around, none of them holding as tightly as they should in the case.