8-Piece SDS-Plus Professional Drill Bit Set with 4-Cutter Heads, Carbide Tips, SDS Rotary Hammer Drill Bit Set, Use on Concrete, Cement, Stone, Brick, Other Masonry Materials

Now that I have had a chance to use these bits, I am very impressed. They do a great job and make short work of it. Very durable. They are longer than the average masonry bit you find at the home stores. I like the way the base fits into the chuck, fits tight, no slipping.

Nice little set to have on hand, purchased for one specific size and have used a few others as well. Seem to drill into concrete with very little effort.

I had high hopes for these drill bits. The 1/2" bit only drill 30 holes and its dead. Only drilled 18 @1/4" holes so not sure how long it will last. Haven't used the other sizes. Also When I received my bit box it was missing the 3/6" x 6" long bit. I received another from the company but still had the same bit missing.

These work very well. Saves a lot of time.

My Grandson loves these

didn't put a dent in the concrete

These burn out super fast; they are pretty much worthless.

This is not an 8-piece set with 4-cutter heads as the title of this item would lead you to believe. Only 5-bits have a 4-cutter head. The other (3) have a 2-cutter head. When I contacted Keegan about this he apologized if the description "caused confusion". Not confusing; more misleading I would say, and a waste of my time, not getting the bits I needed and having to do a return now. I would not have even looked at the item if not for the title of the item that reads-KEEGAN TOOLS 8-Piece SDS-Plus Professional Drill Bit Set with 4-Cutter Heads.