An HMS carabiner for two ropes
 
The BE SAFE SCREW carabiner is an HMS belay carabiner 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 carabiner when the rope is braked.
 
This is true whether rappelling or stopping a fall.