Make reliable Ethernet connections in applications requiring CMR-rated cable - The WIR5ECMRBK 1000 ft. Cat5e Riser Bulk Cable meets or exceeds all Cat 5e specifications to ensure reliable Ethernet network connections, and features a durable black PVC jacket that enables you to color code your network cable drops as needed for a more organized installation. Bulk packaging is perfect for custom length runs and allows you to cover the exact distance required for your installations. Constructed of only top quality materials, the WIR5ECMRBK delivers reliable performance and is backed by our Lifetime Warranty. Riser Rated This Category 5e cable has been tested for CMR riser installations, and is ideal for in-wall, between floor and elevator shaft cable runs where CMR fire rating is required. 100% Copper - a better value StarTech.com Cat5e cables are manufactured using high-quality copper conductors. While many cable manufacturers offer a "cheaper" cable, based on a copper-coated aluminum core, we make no compromises on quality to ensure you receive top value and performance for your network cable investment. 24 AWG Wire This Cat 5e cable is constructed with 24 gauge copper wire, to support a broad range of Ethernet applications such as Power over Ethernet (PoE). Because we use a high quality copper wire, our cables easily sustain the power required for Power over Ethernet applications, whereas the inferior quality offered by copper-coated aluminum cables may be subject to insufficient power delivery, heat buildup, equipment damage and potentially, fire.