Cuts up to 18 ga. steel or 1/16" copper and other unhardened metals. Gives you the ability to make square holes for fuse holders, special connectors, displays, etc. Easy to use, simply drill 3/8" hole, insert cutting head and compress handle.
Mine broke while working on some light gage stainless steel. It might have been to much but the handels bent, the cutter didn't. I think it could have handeled the work if the handels were built a little stronger.