X-Large Shembiner Hook  by CMI®. The Shembiner XL is a lightweight aluminum hook that attaches to your harness which is wide enough for your chainsaw handle to fit inside the hook itself. That allows the climber to quickly and easily remove and rack chainsaws and tools without having to fiddle around with a gate. Another cool feature is an extra hole so you can attach a chainsaw lanyard directly to the Shembiner XL, or to carry more gear.