At Danyee's products,we can supply lifetime free customer service. SHIELDED FROM INTERFERENCE: Made of 4 shielded twisted pair (STP) of copper wires with two RJ45 connectors on each end. Compared to the Cat 6 network Ethernet cable, the additional shielding and improved quality in twisting of the wires provides better protection from crosstalk, noise, and interference that can degrade the signal quality. Intimate velcro as gift to make cables orderly. Special surface braided nylon made the cable stronger and elegant ,what's more,it is dirty-proof too. DanYee Cat 8 Lan Cable support bandwidth up to 2000MHz & transmitting data at speeds of up to 40Gbps ,connect to LAN/WAN segments and networking gear at maximum speeds.