With its curved shaft, the Petzl Sum'Tec is the logical evolution of the classic mountaineering axe. Ideal for mountaineers looking to minimize weight 485 g for 52 cm. Light and versatile, this ice axe has an adjustable hand rest and an interchangeable pick. TRIGREST hand rest improves grip efficiency and can be adjusted without tools. Shaft is made of extruded, ultra light aluminum with a curved upper section. Curved upper section of shaft provides good clearance during ice climbing or in the snow and helps avoid impacts to the hands. The pick 3.5 mm is designed for efficient penetration into ice and guarantees solid hooking on rock. Pick is quickly and securely replaced with the unique screw lock system. Wide oval holes in the head and in the spike facilitate clipping a carabiner. Tilted adze directs the axe correctly into the snow. Stainless steel spike ensures excellent grip on rock.