Description The Croll is an ascender specifically designed for use with a chest harness. It sits flat against the chest so it doesn't get in the way while ascending a fixed rope. The stainless steel wear plate improves durability by reinforcing the rope friction zone. Features: Used with a BASIC ascender or with an ASCENSION handled ascender for rope ascents? 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? Stainless steel wear plate for improved durability? Open the catch by pinching for simple, quick manipulation? Lower hole angled to keep the CROLL chest ascender flat? Upper hole for attaching a TORSE shoulder strap and keeping the ascender in position Specifications Materials: aluminum for the frame, stainless steel for the cam, nylon for the trigger. Rope: for use with single ropes between 8 and 11 mm Certifications: CE EN 567, UIAA Made in: France