I was hoping to get more expensive ones, but I took a risk and won. This kit is great for wood; Haven't tried it on light metal yet, but I don't need it on metal, so it's ok. Make the hole as quick and as clean as possible. The fangs are still there and some of the red paint has worn away, but it looks like the kit is ready for another fight. I hope they will produce and sell larger sizes in the future.