These pole jacks use the same .600 diameter carbon fiber tube that we use for our 600 Tent poles. Available in 4, 5, 6, 7, and 8 inches. These fit best when a basket is affixed to your trekking poles, but will work with out. Comes with a plastic plug in one end to keep the dirt out. Longe lengths do not work as well with Zpole tips.
Basic Pole Jack---4, 5, 6, 7, and 8 inches long 8 inche jack is .52oz
Advanced Centering Pole Jack---9, 10, 11, 12 inches long