Features: The 5.5x2.1mm power extension cord, lower resistivity and high electrical conductivity. Widely used for power extension connection in security monitoring, power adapters, LED light strips, and other equipment. Ensure stable current transmission, flexible extension, suitable for connecting multiple devices. Works perfectly for any devices that require extending the 5.5x2.1mm power extension cable. Suitable for 12V Power adapter or similar device or any applications that requires input and accepts 2.1x5.5mm plug. Specifications: Materials: Plastic Styles: Male head/Female head/One to Two line/Male and Female extension cord Male head length: about 15cm/5.91inch Female head length: about 15cm/5.91inch One to two line length: about 20cm/7.87 inches Male and female extension cord length: about 1.0m/39.37inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color. Package includes: 1pc Power Extension Cable