Review on Bonsicoky Bi Metal Drilling Recessed Fiberboard Cutting Tools by Keith Alvord

This is a heavy duty hole saw. I'm not sure I'll be using it on metal, but it's great for cutting wood and drywall to install recessed lights. Mine arrived with a broken racket due to packaging. It's not worth sending back because there are 2 spare parts in the kit. However, I want everything I paid for. so 3 stars