This is a better quality hole saw than I really need but will last forever. I used to be an electrician on a construction site and was used to buying quality tools. I'm retired now, and it's not really necessary, but old habits are hard to break. I needed to fit some lightboxes into my house and this is the perfect size for them. It cuts effortlessly through paneling, wood and nails. It is also quite easy to remove the slime from it. The next test will be how well it holds up against the cast. It can kill blades quickly.