Vaster SKU-20670-150, 150 Ft UTP Cat5e (UL 24Awg 100% Copper) Ethernet Network Patch Cable, BLUE Color UTP CAT5e PATCH CABLE PC, Sun Micro, and Mac Compatible Cable: UTP Cat5e CABLE UL/CSA CL2 Made in Taiwan VasterCable ALL Cat.5e/Cat.6 & Cat.7 Patch Cable wires are pure copper. We do not sell CCA (Copper Clad Aluminium). CCA is not permitted by cabling. industry Standards and we strongly advise againts the use of CCA in twisted pair Networking Bulk cable. The use of CCA wire directly affects data speed and distance