Camp Hercules Carabiner RED The Hercules features the safest and most user-friendly locking mechanism for via ferrata (especially easy to operate with gloves). The gate opens by squeezing the back lever and gate together and auto locks when released. The keylock nose helps prevent snagging. Automatic lock opens by squeezing the carabiner and pulling the gate Release lever on back is constructed from stainless steel Major Axis (kN): 30 Minor Axis (kN): 9