Ice Screws
Petzl Laser Speed and Laser Speed Light ice screws for ice falls, gullies and mountaineering, with an integrated crank for quick placement even with gloves on, in different lengths.
Which length to choose
Short screws are handy on thin ice, medium ones are the most versatile and long ones are used for anchors and less compact ice. The aluminium version is lighter, the steel one more resistant to wear. Keep the threads sharp and protect them in transport.