Find your local snap on tools guy. They'll cost you about ten times as much, but you can buy individual bits from them, and you'll tear the screw apart before you break the bit. I have been slowly replacing mine in my sets. Also, snap on is lifetime warrantied, so even if you were to break a bit, I am pretty sure it would be covered, I would double check with your guy to be sure. I know they don't replace things like drill bits and files, but I would think the bits would be covered.