Function: Energy absorbing device, controllable system "weak link." Ice-Screams will provide added protection in climbing and rescue situations. They not only absorb energy directly because of the stitch ripping effect they also allow your rope to absorb more energy from the fall by increasing the time interval of the fall or shock loading of the rescue system. Screamers were originally designed to be used on less than ideal climbing protection such as small nuts, old 1/4" bolts, snow anchors. The addition of ICE-SCREAMS have made the placement of the load limiters on a tied off ice screw easy and efficient. Screamers and Ice Screams have proven to be very successful in reducing loads to any anchor when it is stressed in excess to the activation force of the Screamer. Activation force 550 lb. force.