The Skylotoec Ergogrip SK15 is the largest diameter wirecore lanyard in Treetools range boasting a whopping 15mm. The system comes complete with Skylotec Sidewinder swivelling tri-lock carabiner spliced into one end. The adjuster is a patented Skylotec Ergogrip, connected to the harness via a Skylotec passO-Tri carabiner. The unique shape of the Ergogrip is very comfortable in the hand. The large diameter of this lanyard ensured superior friction on smooth-barked trees but works equally as well on the rough bark. And, some climbers simply like the thought of added security. Made in Germany. Certified to EN 358.