For optimum handling, rope control and rope adjustment devices during the climb are often rotated to hold a given position. Ideally they are supposed to stay in this position without following a twist in the rope after the adjuster has been released. The Twister makes it work: It was constructed with a stainless steel bushing instead of a smoothly running ball bearing which allows for an easy twisting of rope control devices when not under load as well as a stable positioning with a defined rotational resistance under load.