Belay device for the leader or the second, descender for use with ropes from 8 mm to 11 mm used single or double.
Multipurpose device: belaying the leader, one or more seconds, or as a descender.
Attachment point for direct attachment to belay (auto-braking belaying of one or more seconds).
Separation of ropes for easier clipping of alternate running belays and avoiding crossing of the ropes when abseiling.
Does not twist the ropes.