This is the same leash as supplied with the Twinskin Bars, but could be used in variety of applications.   It is about 41" (104 cm) long and has a loop for a larkshead connection on one end and a captive stainless steel snap hook on the other.  It's made of Dyneema cord covered with vinyl tubing and has the Velcro tabs for clipping it out of the way to the twinskin bar center section or side leader.  It also has a safety quick release.