Buy with Confidence: With Monoprice's Lifetime Warranty on all Cables, you can rest assured we stand behind our products and our customers. 23AWG solid, pure bare copper conductors. CMR (Riser) fire safety rating. 550MHz bandwidth. Designed for use in 1000Base-T gigabit ethernet network environments. Exceeds ANSI TIA/EIA 568-C.2 standards UL listed and RoHS compliant