INTERNATIONAL STANDARD UIAA 121 STANDARD EN 12275-H:2013, EN 362:2008 BREAKING LOAD, MAJOR AXIS 24 kN BREAKING LOAD, MINOR AXIS 7 kN BREAKING LOAD, OPEN 8 kN MAX. OPENING 20 mm SIZE 4.3 x 2.3 in WEIGHT 0.18 lbs LOCKING SYSTEM Screw MATERIAL Aluminium