The core is protected by a flexible, spirally wrapped,aluminum interlocking armor that offers easy, one -stepinstallation and over seven times the crush protection ofunarmored cables. With a flame -retardant outer jacket,this cable is particularly useful for heavy traffic or morechallenging mechanical exposure conditions and applicationsrequiring extra rugged cables.This cable is available in 12 different jacket colors - blue,orange, green, brown, slate, white, red, black, yellow,purple, rose and aqua. The colored jacket allows for easyvisual identification of the cables. The standard jacketcolor will be determined by the dominant fiber type inthe cable and will use the standard part numbers shownhere. Contact Customer Care at 1 -800 -743 -2675 to orderother color options.