The Black Diamond Raven Pro is one of the lightest, full-service piolets and is an excellent choice for mountain climbing or glacier travel when weight is a paramount concern. Full-length pick offers superb bite while self-arresting and penetrates hard surfaces on steep terrain. The investment cast stainless steel head is both comfortable and tough. In fact the steel head is the most comfortable we have tested and provides excellent purchase. Durable stainless steel spike offers good bite on hard surfaces. 7075-T6 aluminum shaft cuts weight without sacrificing strength. Curved adze allows for a natural swinging arc and chops steps in hard ice with ease. 50cm: 12.5 oz / 354g 60cm: 13.9 oz / 394g 70cm: 14.8 oz / 419g Ideal for all types of mountain climbing and expeditions.