The carbon fiber telescopic camera mast are conntroled by a  nylon clamp/lock, The pole can extend and retract quickly ,  There is a M10 thread on the top.It can suit brush if necessary.

 The nylon clamp are more corrosion resitant,So have long service time. Then different length/size carbon fiber telescopic pole can be designed. Whatever you use it for swimming pole,camera mast pole,rescue pole,net pole,fishing rod etc.  It can suit your request well.

more details welcome to contact us via laura201226(at)hotmail(dot)com. Thank you!