My Surge keeps winning the day! Details: The small but aggressive smurf Mill File that comes with the Leatherman Surge fits in tighter spaces. Going to add to my list of things to always bring to PickNPull: a good aggressive file, probably a smurf Mill File. For when I round off a bolt or nut trying to loosen it. If accessible you can often file down two opposing sides of the bolt/nut to get good sized flat spots for channel locks/ vise grips maybe even a C Clamp or smaller wrench to grab & loosen. Pre soaking in penetrating oil like Liquid Wrench for as long as possible also helps. Have a wire brush handy to keep the threads clean too when needed. *Edit: I didn't call it a smurf file lol its auto changing b-astard to Smurf