This safety set contains a Smart 2.0 safety device and a Smart HMS carabiner. It is a perfect combination for safe climbing. The set complements and maximizes the safety. Smart 2.0 delivers intuitive control, lightweight rope climbing without clutter, easy and smooth starting or self-blocking with dynamic slipping when capturing a fall. The whole construction is simple in design with no moving cams and joints.. Carabiners with a safety bar prevent the carabiner from twisting and undesired release carabiner.