Features:

1. 72-tooth 5° small angle rotation,closer engagement of wheel and teeth,saving time

2. Strong magnetic adsorption and one-key switch,convenient for single-hand operation

3. Double fixation,built-in magnet with a groove to prevent detachment

4. Drop-shaped design,lightweight and flexible for various working environments

5. Multiple assembly methods for various secenarios

6. Compact size,lightweight and fit in your cycling jersey pocket