1.Our carbon walking stick Opp-6 locking system can bear ab.170Kg under the 3.5N/M ... test, our carbon trekking pole’s opp-6 locking system can bear ab.170Kg under the 3.5N/M ... torsion, even though the system is small, the construction is easy, it is very ... of the shaft1.0mm/1.2mm/ for carbon, 0.8mm for alumLock systemour unique lock system, can quickly and strong lockedLength66CM- ...