Park tool pedal wrench pw3as a manufacturer of bicycle specific tools since 1963 you can safely rely on park tools many years of experience the worlds largest bike tool manufacturer is the first choice of professional and home bicycle mechanics around the world featuresmade from cro moly steel for a shop quality pedal wrench made to last 15mm and 916 precision openings and a long round vinyl dipped handle that wont dig into your hand like flat pedal wrenches the pw 3 is nominally 32cm