Attempting to drill through a 1/16" corner of aluminum with a power drill required such force that the aluminum got hot! In fact, he just punched a hole and didn't cut it. The video shows how both sides of the hole have distorted. I returned it and ordered a Drill America -KFDRSD19/32 19/32" Reduced Shank Black Gold HSS KFD 1/2" Shank KFDNICE series!