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.
A flat tire can instantly take the air out of any ride. The GP-2 includes everything needed to repair a punctured inner tube without messy glue or adhesive.
