Ftth outdoor self-supporting double-fly drop cable is the strengthen version different from the traditional self-supporting butterfly drop cable,the outer jacket is black PVC/LSZH for outdoor use,the dimension of the cable is:2.0x8.0mm(2*1-4core) ,the option for strength member is:Steel Wire,FRP or KFRP,the fiber can be specific as:G652D/G657a1/G657a2 or custom.