The karabiner is made from aircraft quality 7075 Aluminium Alloy Hot Forged and individually tested. This is a manufacturing technique guaranteeing the best strength results (as the material is free of internal stress).
To reconfirm our data, we asked the Israel Institute of Standards to test the breaking strength of karabiner both before and after repeated bending cycle. Test results received from them, showing karabiner before bending carries 2.5 ton and after prolonged use is still good for at least 1,700-1,800 kg.
A copy of the test results is available for download here.