The pedal wrench you're looking at is a Shimano Pro Tool Pedal Wrench. Handle width is a continuous 30.1mm x 18.0mm across the widest part of the oval cross section. The real issue is the length. Its only 23cm long - perfect for pedal INSTALLATION, but much, much shorter than either the Pedros or Park Professional Shop Versions - neither of which I've ever needed to use a cheater bar with for seized pedal REMOVAL.