The  external  lock system patented Flicklock, allows a great regulation of the pole.

Thanks to his tecnology FL tighten tube over tube allowding a better resistance compare to the traditional rotation/expansion system.

Through the adjust screw you can modify the resistance grade.

How to adjust ? 

Open the lever
Adjust the length
Close the lever

Only with the open lever you can adjust the screw

Turns clockwise to increase the locking force or counterclockwise to decrease it