The line is built on RIO's ultra-low stretch ConnectCore for the minimum of stretch and the maximum in performance, and features RIO's XS and AgentX technologies, as well as welded loops on both ends.WF6FHead Weight:175grHead Length:40ft/12.2mTotal Length:100ft/30.5mWF7FHead Weight:200grHead Length:40ft/12.2mTotal Length:100ft/30.5mWF8FHead Weight:230grHead Length:40ft/12.2mTotal Length:100ft/30.5mWF9FHead Weight:260grHead Length:40ft/12.2mTotal Length:100ft/30.5mWF10FHead Weight:305grHead Length:40ft/12.2mTotal