Compact screwgate karabiner adapted for use with single ropes or with your belay device.
 
A karabiner for belaying "BE ONE SCREW" is a compact karabiner with screw lock. It is particularly suitable for single ropes. Its contact surface has been optimised by using a 12mm diameter cylindrical profile. It is less constraining for the rope and limits its wear during repeated descents. It also makes it easier to slide when giving slack. These characteristics make this karabiner ideal for use in belaying, leading or top-roping.