Plum 1X2 MTN/Backland is available in 3 sizes ranging from 80mm up to 100mm. Super fast, it is not necessary with this system to slide the crampons on the side of the binding to put it in place!All you have to do is position the crampon at a 90 degree angle above the binding. Less wear and tear during placement hence less risk of breaking the crampon. The rotation of the crampon must be free and without resistance. Any breakage resulting from a bad positioning of the crampon in the crampon slot will not be taken under warranty. Material: Titanal Plum 1X2 MTN/Backland ski crampon