Designed to make rope ascents more efficient and less tiring. Cam facilitates passage of the rope through the device, even on the first few meters * Toothed cam with self-cleaning slot optimizes performance under any conditions (e.g. frozen or dirty ropes) * Stainless steel cam has better resistance to corrosion. Mechanism is totally integrated into the body of the ascender to help prevent snagging * Releases from the rope with a simple backwards movement of the foot. Foot strap of 100 % Dyneema for abrasion resistance * Easy adjustment with DoubleBack buckle. Weight: 80 g. Rope: for use with single ropes between 8 and 13 mm