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Park Tool

CB-4

Park Tool CB-4 Bio Chain Brite

Bio Chain Brite Bicycle Chain and Component Cleaning Fluid is a 100% biodegradable, natural, plant-based degreaser formulated for use in the CM-5.2 Cyclone Chain Scrubber.

  • Use CB-4 full strength, do not dilute with water. Cover parts in solvent and scrub using a brush
  • Won't harm alloy, plastic or rubber parts

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