“I returned them”

“I was advised by a friend to get a set of trekking poles to take the weight off my knee when I went hiking. Maybe I should buy these at a local store so someone can demonstrate how to use them, but these had no instructions, each pole is constructed differently, the adjustment wasn't clear as to how anti-shock would be on or off, and it didn't appear that the height settings would hold once you started putting a little weight on them as there was no locking device. So I sent these back. If you know that these are exactly what you are looking for then the price is good, but for a novice trekking pole user, these are not the way to go. If anything they have just discouraged me from buying another set.”