The WIRC5ECMR Cat5e 350MHz Solid UTP Cable (Blue) is CMR rated for use in walls, conduit, ceilings, etc. and is packaged as a 1000-foot bulk roll. The cable features a blue PVC jacket, which provides both flexibility and durability, while making it easier to color code network cable connections. Backed by StarTech.com’s Lifetime Warranty. The StarTech.com Advantage – Enjoy the low cost savings of buying bulk – Rated to 350Mhz which exceeds Cat 5e standards – Convenient measurement of cable runs