Petzl Laser Speed Light Ice ScrewUltra light ice screw reduces every possible gram of weight for mountaineering. The aluminum tube, associated with a steel drill, makes the screw lighter. The integrated folding crank gives an optimized lever, making it easier and faster to screw in. Maximized weight reduction: Ultra light aluminum tube, ideal for mountaineering when reduced equipment weight is a priority Easier bite: The shape of the drill is optimized to facilitate bite into the ice