I have a pair of Ruta Locura Yana carbon fiber trekking poles for sale. I’m super impressed with these poles – the construction is simple but ingenious. They break down into two or three pieces. To assemble you just loosen the fittings a few turns, slide the sections together, and then twist to lock. Adjustable range seems to be appx. 41″ to 54″ by my measurements. Weight for the pair is 221 grams on my scale, so appx. 3.9 ounces per pole. They have been used but are still in nice shape and function perfectly. $85 shipped to US addresses. Contact me for a quote if you are in another country.