A very smooth tree climbing foot ascender. This Jet Step ascender has a unique dual cam design resulting in lower spring tension and reduced drag. This helps eliminate rope wear and provide increased grip strength on wet, muddy and frozen ropes as well as providing efficient self-tending of the climbing line. It's easily removed from the line when not in use (remaining on your foot/ankle) and reattached as needed when climbing. Can be used on either foot/side with rope sizes ranging from 5/16 to 1/2 in (8 to 13 mm). We have other tree climbing gear not yet posted, please contact us if you're looking for something specific.