This is an express extension power cord. It is made of copper material, strong conductivity, durable to use. This set can reduce the burden on your motherboard while connecting multiple graphics cards. Features -Color: Assorted. -Material: Copper. -Size: About 23.00X2.70X1.30cm/9.04X1.06X0.51in. -Wire outer diameter: OD2.1mm. -Rated temperature: 80 degree centigrade. -Product interface: 5559 8pin end, 5557 6+2 sliding rail interface at the other two ends. - 8-pin to (6 and 2-pin) graphics cards power cord, suitable for 8-pin power interface graphics cards extension or conversion. - When the 8-pin power cord of the host power supply is not long enough, you can use this cord to extend the graphics cards 8-pin is a combination of (6 and 2-pin). - This cable is designed to convert any 8-pin cable to a (6 and 2-pin) line. - An economic solution that saves you from upgrading your power supply. - Excellent for video cards that need the 8-pin connector and for those with newer generation graphic cards. Package list: 10 x Adapter Power Cords