Whether you're swapping pedals, removing them for storage or transportation, or just making sure they're tight, a pedal wrench is a fundamental tool for any bicycle owner's toolbox. The Park Tool PW-5 is perfectly designed to securely engage the narrow 15 mm wrench flats found on bike pedals while providing the leverage needed to fully tighten pedals. With a small form factor compared to a shop wrench, the PW-5 Pedal Wrench is perfect for the home workshop or event toolbox.