The reason Pedro's Y Wrench is ubiquitous to every bike tech's bench and serious pedal-head's garage is that the shape provides great grip and twist-ability. Add to this the angle-friendly ball end, and the Y wrench effectively cuts minutes off the installation and removal of bolts. When leverage is needed, the 'L' shaped wrenches come into play, but when efficiency is of the essence, nothing beats having three sizes at hand in a design that's easy to use.