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The 10 mm Dynex Runner from Black Diamond is a low-profile sewn runner for traditional protection. An essential part of any alpine climber's rack, these runners are indispensable for building anchors, slinging natural features or extending placements to reduce rope drag. This highly abrasion-resistant, lightweight material won't weigh you down and absorbs less water than nylon, making it perfect for big routes and snowy or icy terrain. Each size is also color-coded for quick and easy identification on your harness.