Final SALE: For safety reasons, we cannot accept returns on load-bearing Climbing equipment. Sorry for being so mean. Features of the Cassin Blade Runner Alpine Crampons The most versatile Technical ice crampons on the market Patented heel slide design integrates the beneFits of vertical and horizontal frame crampon designs Interchangeable front points Are easy to switch from Dual to mono, centered or offset Optional Snow points optimize the crampons for alpine terrain V-shaped chromoly steel front platform offers High rigidity and reduces balling The patented heel slide is constructed from proprietary Sandvik Nanoflex steel for the optimal blend of strength, flex and lightweight Asymmetric design follows the contours of modern boots to ensure a more precise Fit Semi-automatic toe bails allow for use on boots without rigid toe lugs Anti-balling plates included Available in two sizes for optimal boot Fit compatibility