The new patented runner for height access systems from SKYLOTEC, is ahead of its time. Through an additional locking lever, SPEED works during climbing like a pull-back runner. The runner remains close to the climber and so the fall distance remains short. This creates comfort while climbing and minimizes fall-related injuries. In the case of failure of the pull-back feature, whether through mistake or unfavourable conditions, the runner can reach only a fixed pre-set maximum speed. Should the runner exceed this speed, an independently acting second safety feature kicks in: A centrifugal force brake swivels out and the runner blocks.