Speed of placement is the key to a modern ice screw. The screw needs to make that initial, crucial bite into the ice, then it needs to wind in quickly and smoothly. That way you can clip the thing and keep moving before you get too pumped to continue! Constructed from a very high quality steel tube, the front teeth are razor sharp to ensure first turn engagement and the outside teeth are precision ground so they will pull the tube in efficiently during the winding and hold the screw firmly in position when loaded. The inside of the tube is honed to a mirror finish to minimise any frictional resistance when it is being wound into the ice.