Petzl FLEX Linking Bars for CramponsLinking bars that make the connection between the front and rear Petzl crampon sections more flexible for use with flexible and or larger sized shoes FLEX linking bars are designed to make the connection between the front and rear Petzl crampon sections more flexible. This improves walking comfort and the durability of crampons used with flexible and or larger sized shoes (above size 42). Compatible with IRVIS, VASAKand SARKEN crampons Product sold in