The 12 fibers are color coded to the industry standard: Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet,Rose, and Aqua. This pigtail is designed for use for high fiber count splicing applications. The blue boot on this pigtail denotes a singlemode/UPC. WolonFiber's 12-Color Fiber Optic Pigtail Packs are manufactured strictly to the TIA-598-C standard with vibrant, easy-to-identify colors. Available in OS2/OM3/OM4 at factory-direct wholesale pricing. OM4 pigtails are fully. CO-NET produce and supply 12 core colorful pigtails with SC, LC, FC and ST connector. Entire ribbons can be spliced simultaneously. The fibers and the bufer are both colored to ensure ease of identification when stripped. Pre-installation of pigtails into Connectivity equipment is possible.