Easy-to-use beefed up backcountry bindings. The BC Magnum bindings are beefier versions of the Manual, they still have the lever-lift release system to take more controllably. These bindings require screw-on mounting. If you are not comfortable mounting bindings, ask us or a local shop to do it for you! For the DIYers, pre-drill pilot holes and use waterproof glue on hole prior to screwing onto ski.