The Spirit quickdraws combine a straight Spirit and bent Spirit with one of three different lengths of Express quickdraw slings and a String rubber tensioner for the bent carabiner end. This is one of the strongest, smoothest, and lightest quickdraws out there. Specs: Strengths: Major Axis (23 kN), Minor Axis (10 kN), Open (9.5 kN) Gate Opening: Straight (32mm), Bent (35mm) Weight: 49g per carabiner American Alpine Institute's Guideschoice