Petzl 8.5 mm Tango is a rope designed for long multi-pitch routes on rock, to be used as a half or twin rope. Easy to use with belay systems thanks to its diameter, it has the Middle Mark in the middle to guarantee excellent control during safety. It is also made with a series of treatments that improve its performance. The UltraSonic Finish treatment strongly binds the core to the sock at the ends of the rope to ensure durability. The ClimbReady treatment ensures that the rope is ready for use and avoids unwinding errors by the climber. The Everflex treatment allows excellent and long-lasting handling. Instructions. Petzl Tango 8.5 mm climbing half rope