Made from bombproof stainless steel, the 12-point Black Diamond Serac Pro Crampon is designed to take on the variable, moderate terrain found on classic mountaineering routes. Horizontal front points bite securely in ice and serrated secondary points add stability in steep snow. Along with durability, stainless steel also shaves weight, resists snow build-up, won't rust, and doesn't require any finish coatings that wear off over time leaving a toxic residue in the mountains. Please note: The Black Diamond Serac Pro Crampon is specifically designed to fit only technical mountaineering boots that have a rigid plastic sole and protruding toe and heel welts.