ISC 40kN Steel Oval Keylock Super Safe Carabiner

The  KL321 combines the specification of an Oval with that of a 'D' shape Carabiner.  True Ovals are not capable of achieving high breaking loads, as their symmetrical shape shares the load between the spine and the gate of the Carabiner.  The weakest part of any Carabiner is the gate and so wherever possible, designers will try to bias the load toward the spine of the Carabiner.  This is why 'D' shape Carabiners (typically) give the highest breaking loads. (MBS) Minimum Breaking Strength (kN)    40 (MBS) Minimum Breaking Strength (lbf)    8800 Gate opening gap (mm)    17 Gate opening gap (inches)    5/8 Weight (grams)    193 Weight (ounces)    6.8