High Quality Core WireThe PSU cable extension uses a highly conductive 18AWG tinned copper wire inside, which enables high current transmission and fast transmission speeds. PSU sleeved cable kit can easily handle your ultra-high performance power supply without stress Additional Features [PSU Extension Cable Kit]1 X 24 Pin ATX Extension Cable (for Motherboard), 2 X (4+4) Pin EPS Cable (for CPU), 2 X (6+2) Pin PCI-e Cable (for GPU). The length of each power cable is 35cm [Warm Tips]These cable extensions must be plugged into the existing cables of the modular power supply and NOT directly to replace the Modular Power Supply cords