With a wide-wing profile derived from the cross country racing bindings, the magnum features an extra-wide 67 mm contoured steering plate. The wide plate design increases the contact area between boot sole, binding plate and ski. Although the binding has been designed for use on wide skis, it may be used on skis with minimum 52 mm width. * Made with high tech plastic and stainless steel for low weight and durability. Manual locking mechanism is easy to use, even with gloves or mittens. Compatible with NNN BC ski boots.