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The Super B TB-3327 Gear System Tool is a brilliant 3-in-1 bike tool that combines a chain hook, chain checker and cassette/freewheel checker in one compact unit, making it easy for riders and mechanics to identify chain and cassette wear before it causes bigger problems. Designed for Shimano® HG/IG drivetrains, this gear system tool makes a pre-ride checkup quick and simple, helping you catch worn components early and avoid an unexpected breakdown mid-ride.
- Combines a chain hook, chain checker and cassette/freewheel checker in one tool
- Makes it easy to identify chain and cassette/freewheel wear
- A checkup is strongly suggested before a long ride
- Designed for Shimano® HG/IG chain and cassette systems