Park Tool Gear Clean GSC-1 Size:NONE stiffness and weight while maintaining

stiffness and weight while maintaining the smoothest and cleanest design

Features an investment cast head with locking setscrew and a long

The SPA-2 is purpose-built to fit pin holes on retaining rings found on self-extracting (or one-key release) cranksets

such as ISIS Drive or Octalink

Park Tool Gear Clean GSC-1 Size:NONE stiffness and weight while maintainingThe GSC 1 is specially designed to free your bicycle drivetrain from muck and grime. The comfortable handle features tough bristles clean the derailleur and cassette, and a contoured toothed end to reach dirt deep between the gears. Saves wear and tear on your chain and cassette. Also works great on derailleur pulleys, brakes, or other places where dirt collects.