As an industrial electrician, I found this hole saw set to be a great addition to my toolkit. The arbor system made for easy attachment and removal of the hole saws which resulted in time-saving during my work .The tooth design made for precise cuts without requiring extra force, which was impressive. However, the set is a bit pricey but still worth the investment. Overall, a great product for any professional and WOULD highly recommend it. #Industrial And Scientific #Cutting Tools.