
Great for what I do. I'm a welder, not a mechanic, so it may be different in the hands of a person of this profession. The numbers I get always match the machinists' papers. Too bad I didn't buy this sooner! It has a nice case and all the parts fit together perfectly. Very easy to use! The pieces are thick, maybe over half an inch wide, and heavy. I use these inner holes over 6" in diameter and they withstand impact around welds and 500 degrees or more will not affect the kit adapters so this is a solid set. Worth what I paid.