Park Tool CB-4 Bio Chain Brite Cogs-11-12-13-15-17-19-21-23-25 Range: 150 mm | 6"

Range: 150 mm | 6"

Flow anatomic cut-out ensures top riding comfort by offering flexibility at the front of the saddle

Highly adjustable head for optimal viewing angle

2Position (Includes Knob

18% more cut resistant sidewall and easier to mount

Park Tool CB-4 Bio Chain Brite Cogs-11-12-13-15-17-19-21-23-25 Range: 150 mm | 6"Park Tool CB 4 is a 100% biodegradable natural plant based degreaser formulated for use in the CM 5. 3 Cyclone Chain Scrubber CM 25 Professional Chain Scrubber or with a scrubbing brush as a general purpose degreaser. When used with a chain cleaner CB 4 gets bicycle chains clean inside and out so they're good as new. Will not harm alloy plastic rubber or carbon fiber parts so it's safe to use for cleaning cassettes chainrings pulleys or any other