The Mad Rock Ultra Tech HMS Screwgate carabiner is a great match for your belay device. This screw lock carabiner also features the forged I-beam construction and no snag gate. Specs: Major Axis: 25 kN Minor Axis: 9 kN Open Gate: 9 kN Dimensions: 96 mm x 65 mm Gate Opening: 23 mm Weight: 67 grams Certified: CE Individualy tested: 25% Rated Load