Ok, so I know now that a Steel bit could work in a rush, but I'm better off investing in a tungsten-carbide bit because the steel one will be dulled.
I also know I can buy them here for a relatively good price, but what I don't know is what size to get, and whether or not these would work with my current equiptment. They seem to have some weird rings on the top end.
Any suggestions on what size? Someone said #66 once I think...can't remember..