this 10-piece electrician cutting tool set from the Hole Saws & Accessories in Cutting Tools category is an Industrial and Scientific wonder! After I put these to the test on a job site, I was thrilled with their reliable performance; the carbide edges held up perfectly in a range of tough materials. The set has all the sizes I need from 3/4" to 2 1/2", and the compact case keeps them organized. The only potential downside is the price, but I'm confident they will save me money in the long run thanks to their durability..