Black Diamond semi-automatic crampons Serac Strap 12-point crampons Includes storage bag. I believe I used these 3-4 times in the Yatsugatake mountains in winter, and I'm selling them as I'm retiring from winter mountaineering. The blades have never been sharpened, but they are still sharp, so I'll leave them as they are. ◾️Please be sure to read my profile. ◾️Price of this item is not negotiable.