Park Tool - CC-4.2 Drop In Chain Checker Saddle The round cross-section shape mimics

The round cross-section shape mimics the natural shape of the tire

With the MIK Carrier Plate

180cm length

Greg is always looking for the final pieces to the ever evolving puzzle

Park Tool - CC-4.2 Drop In Chain Checker Saddle The round cross-section shape mimicsPARK TOOL CC 4. 2 DROP IN CHAIN CHECKER A 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