Park Tool CBW wrenches are small, handy, nickel-plated wrenches designed for use on brakes, derailleurs, and any other component with small fasteners on a bicycle. Thin profile for ease of access to brakes and other hard-to-reach areas

• The all-around PARK extra-flat wrenches. Tough and durable. For all kind of tightenings, adjustments, etc..
  
• CBW-1: open 8/open 10mm
• CBW-4: open 9/open 11mm