CC-4: Chain Checker Bivo One 21oz Perfect for when marshmallows aren't

Perfect for when marshmallows aren't the only thing that you want to get toasty

ideal for packing onto handlebars

leather washers

Basket tapers to 12 1/4″ x 7″

CC-4: Chain Checker Bivo One 21oz Perfect for when marshmallows aren'tDescription A worn bicycle chain causes poor shifting performance and can actually wear out drivetrain components, causing more expensive problems. The Park Tool CC 4 Chain Checker is a drop in style gauge that measures bicycle chain wear. The laser cut CC 4 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