Park Tool Bio Chain Brite Shelter & Sleep 6 x 13 x 8

6 x 13 x 8

Our bestselling friction hitch and autoblock has been redesigned with a stronger aramid fiber

and long training days

they’ve managed to utilize its great insulation properties into outdoor gear

Park Tool Bio Chain Brite Shelter & Sleep 6 x 13 x 8Park 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