HMS screw lock karabiner for use with belay devices.
 
An HMS karabiner for two ropes The BE SAFE SCREW karabiner is an HMS belay karabiner adapted for belaying. As such, it can accommodate two ropes at once, without the risk of them overlapping in the event of a fall. The reception cradle ensures that the two ropes slide together and does not generate friction on the sides of the karabiner when the rope is braked. This is true whether rappelling or stopping a fall.