Whenever I have to hold a bolt on one side of something and tighten a nut on the the other side, (or the reverse), a breaker bar is a good thing to use on one side. Very often it does make a difference if you tighten the bolt or the nut. For example, let's say you have a bolt that goes though sheet metal, and is tapped. You may have to hold the bolt head from turning, but you don't really want to torque down on it, you want the torque on the nut on the other side. A breaker bar is perfect. Sure, you can use a box wrench for the same purpose, but sometimes you can't get a wrench on something that a socket could work on. There is NO reason to use a 1/4" breaker bar for the added torque. I'm sure you can snap just about any bolt that a 1/4 ratchet would be used on with just a ratchet. The 1/4" breaker bar is just handy to have, and I've used mine occasionally.