The bit worked great and was a terrific price. It went through brick and concrete block as described, with several breaks to cool off my hand drill that I used for the project. I would definitely recommend this product for its performance and very competitive price. Be sure to wear a good mask to prevent silicates from getting into your lungs and ear protection. It will be loud! When receiving the bit, I was concerned that the diamonds supposedly on the cutter portion of the bit were absent from view, but it really did the job with very little wear upon the tool.
stacy 
