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The Innovation of Spider-Fx is due to its hinge, which offers the user three new features. First of all it makes possible for the climber to carry out a powerful strike from the wrist, with the help of the new swing-function, based on the physical principle of radial acceleration. The climber remains close to the rock and uses his conventional technique but gains a more powerful strike. The second function offers a toolless change of the curvature of the ice tool to the user, during climbing. Folded it needs just little space in the backpack
Prof. Frank Zebner
Frankfurt a. M., Germany