Park Tool CB-4 Bio Chain Brite Drivetrain Speeds-8 anodized and assembled entirely in

anodized and assembled entirely in Asheville

Unique chainring design results in a lighter weight

Stain-resistant fabric coating

TPR double injection plastic housing for a soft feel experience and protection of the bicycle

Park Tool CB-4 Bio Chain Brite Drivetrain Speeds-8 anodized and assembled entirely inPark Tool CB 4 Bio Chain Brite. 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 theyre good as new. Will not harm alloy plastic rubber or carbon fiber parts so its safe to use for cleaning cassettes