Kobalt is a company, but as far as I know, they only put out titanium and high speed bits at Lowe's, not cobalt bits - don't get them, they'll dull in a second on metal. Lowe's does have DeWalt cobalt bits, and those are pretty much the only ones I get over there. They're fairly cheap when you get the sets on sale and they will cut very well. The tips have a tendency to lose bite from chipping and the thinner ones will crack a lot faster than the high speed steel ones - take some care drilling and you won't have a problem. I generally buy several of the smallest ones and have a couple back-up sets - I ain't that careful That, and the life of the bit will be extended if you use a little oil to help extend the life of the bit when your chewing on metal.