Omega Screwgate carabiner:Gate Opening: 21.0mmCE - UIAA: yesGate Closed Strength: 21knGate Open Strength: 6knCross Load Strength: 10knWeight: 78gLength: 110mmMaster:A lightweight belay and rappel device, with extra friction 'V' slots to add more controlCool Tech: cooling slots help in removing snow/ice and mudWeight: 53g (1.9oz) More info