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This design combines the handle bar with useful tools, which called “T-bar”. The handle-bars are retractable, and it can be pulled off from bike, and then stretch out the tools. It can be a pump, a wrench, a screwdriver, or any other frequently-used tools. The heads are changeable, different tools has different colors to be distinguished. It is very convenient and necessary for cyclists to deal with some unexpected situations in an emergency. Bicycle riders can choose what kind of T-bars they would like to take in their riding journey.