My trusty Craftsmen (one, a '75 has a square Phillips with can key, the other an '86-94 has a round Phillips with can key). Really haven't used the other Craftsman (the '75) much due to no snap on most of the backside tools, but I've used my '86-94 mostly as my EDC SAK and it's never messed up. As long as you use it reasonably (in other words, not putting a whole lot of torque on the thing), you should have no trouble. It shouldn't break.