Park Tool CC-4.2 Chain Checker C-class ah sorry – riders that

ah sorry – riders that slog it out all day into those nasty headwinds

Provides audio and visual feedback

Lubricant which contains selected additives to reduce friction and helps deliver smoother gear shifts

PC (Mac and Windows)

One Multiway valves)

Park Tool CC-4.2 Chain Checker C-class ah sorry – riders thatA worn bicycle chain causes poor shifting performance and can actually wear out drivetrain components, causing more expensive problems. The Park Tool CC 4. 2 Chain Checker is a drop in style gauge that measures bicycle chain wear. The laser cut CC 4. 2 accurately measures a long section of chain and strategically comes in contact with the chain in three places, quickly and easily taking the guesswork out of determining when chain replacement is