Several years back there was a fad here to use smaller cable for snares 1/16 th. cable I killed several coyote with the smaller size cables on them . being that small it would cut through the skin of the animal and I found a few that had healed over the cable and it was rusting but I also found several that had bad infections where it had cut into them . The snare in your picture appears to be 3/32 nd. inch diameter , it may have been attached to a longer lead where the swivel is but the length that you show isn't long enough for me as a coyote snare to let the coyote to tangle up and die fast but that's just my thoughts . I never did like skinning a water head coyote myself .