The Park AWS-3 three-way hex wrench. I can't believe I didn't treat myself to this sooner, as I have been fighting with foldable hex wrench sets for years and have always been frustrated trying to squeeze them in and out of tight spaces. The AWS-3 contains the three hex wrenches I use most (4,5, and 6mm) in an easy, ergonomic triangular configuration. A simple tool that has already made my life much easier.