Beal Joker 9.1 mm Unicore Golden Dry climbing rope with triple certification is intended for more experienced climbers. Joker 9.1 mm Unicore Golden Dry can be used as single, half and twin. Lightweight and compact, it guarantees versatility for the most demanding mountaineers and at the same time is excellent on classic routes, mixed routes or on snow. Safety is further guaranteed by the new Unicore technology that welds the core and sock together. It does not swell, so it stays soft longer over time. Golden Dry is a waterproofing treatment applied to the jersey and core of the rope to make it more resistant to moisture, abrasion and dust. The Beal Joker is also available in the Dry Cover version. Instructions. Beal Joker 9.1 mm Unicore Golden Dry climbing rope