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Opis:
How strong are ice screws? Plenty strong enough, but the question is more about how strong is the ice. We did 9 tests in this video and found the aluminum hangers on the Petzl Laser Speed breaks at 14kN, long 21cm screws are stronger than a carabiner, and of course that screws in tension hold better than when placed in shear, like so many tests in the past have confirmed. See our write up and spread sheet on our blog - https://www.hownot2.com/post/ice-screw-break-tests-in-iceland.
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