Chain Compatibility: Suits 10 or 11speed chains (10sp chain works on 9sp drivetrain)

the Park AWS-10 Multi Allen Key Tool has all the sizes you'll most likely need

PSI: 45-58

Size (L x W x H)    8

Using a hammer

Unior 617170 Chain Wear Checker Exclusive Chain Compatibility: Suits 10 orThe Unior 617170 Chain Wear Checker is a super handy, easy to use tool that will let you know if its time to change your chain. If you replace your chain early enough you will prevent premature wear to your cassette and chain ring. Who's this item for: Perfect for the at home bike mechanic, or really anyone who rides that likes to know the condition of their gear. Chain compatibility: Compatible with all chains. How does it work: It's pretty simple to