Metal frames that have 10 1 3/8" spikes on them. They are strapped onto the bottom of boots to provide better grip while walking on ice. Created by Eric Long Date Created 06/10/2010 Source Smithsonian National Air and Space Museum, NASM Original Photography, NASM Acc. 2012-0026. Keywords Aviation; Equipment; Exploration; Flight Gear; People Rights and Restrictions Usage conditions apply
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