STec DUCK-R H Rope Access Back-Up Device. The Duck-R H conforms to EN 12841 Materials: Body: Stainless Steel Cam: Stainless Steel Spring: Stainless Steel Cord: Nylon Specs: CE 0120 EN 12841 Type A Rope Diameter 10.5 – 11mm Rope Type: EN1891:1998 Type A
