Black Diamond Serac Crampon-Strap. Built for the variable moderate terrain of classic mountaineering routes in the Tetons the Alps and the Cascades this 12-point crampon is built for ultimate durability with a yet light design that incorporates a strong yet light stainless steel construction with rocker in the front rail to accommodate modern mountain boots. Its unique design provides secure bite in icy steps while the powerful rear points offer stability on descents and low-angle terrain. Wider toe bails (sold separately) can be used with appropriate wide toe welts for boots without a toe welt. If you have a toe welt use the Pro version for technical boots while the Strap version is for mountain boots without a toe welt and the Pro version for mountain boots without a toe welt then you will want to order wide toe bails sold separately. Specifications for Black Diamond Serac Crampon: Manufacturer: Black Diamond Type: Strap Fabric/Material: Stainless Steel Weight: 1.9 lb Features of Black Diamond Serac Crampon Redesigned stainless steel construction is durable resists snowballing and wont rust Versatile horizontal frontpoints with classic secondary points and stable rear points Low-profile micro-adjust heel bail offers precision fit Pro version is for technical boots; Clip version is for mountain boots without a toe welt; Strap version is for non-technical footwear For use on a ski boot you will want to order wide toe bails sold separately Includes front and rear dual-density ABS Package Contents: Black Diamond Serac Crampon Black Diamond Serac Crampon-Strap