The Petzl ASCENTREE Double Handed Ascender has been developed specifically for the tree care industry. This rope clamp is designed for double rope ascents and features ergonomic handles for a comfortable and powerful grip when pulling. The safety catch/cam unit is fully integrated into the device to prevent involuntary snagging. Features: Designed for ascending doubled ropes using the foot-lock technique or using two PANTIN foot ascenders Simple and efficient to use Ergonomic over molded handles allow a comfortable yet powerful grip Wide opening allows easy handling, even with thick gloves The safety catch is totally integrated into the body of the rope clamp to help prevent snagging Toothed cam with self-cleaning slot optimizes performance under any conditions (frozen or dirty ropes...) A lower hole for connecting a PROGRESS lanyard An Upper hole for clipping a carabiner around the rope Specifications: Materials: aluminum, stainless steel, plastic, rubber, nylon Weight: 11.64 oz (330 g) Rope compatibility: 8 to 13 mm Certifications: CE