I am trying to drill out a lug on my old Dakota pickup truck. The cap came off the lug nut. I tried a nut extractor which basically carved the bolt into a nice circle. My next option was to drill out the lug. I was using black oxide bits. The pilot hole went great. I moved up to the next size bit and about 30 seconds in “pow”. It snapped off in the hole. Absolutely no way to get hold of it. Is there a harder drill bit I can use with a hand drill? I can’t even drive the truck somewhere to get it fixed because the tire has separated. The reason this nightmare began. Will a cobalt drill bit cut through the black oxide?