Park Tool CB-4 Bio Chain Brite Model-Aggressor Fits most handlebars Made for

Fits most handlebars Made for 22mm bars (can fit applications down to 19mm)

better stability and more efficient power transfer

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Moisture-wicking UPF 50+ fabric

Park Tool CB-4 Bio Chain Brite Model-Aggressor Fits most handlebars Made forPark 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