Core : 4 core 0.5mm2 Wire diameter : 5.5mm Ring diameter: 22mm High Wear Resistance, Good Weatherability, Resistance, Heat Resistance And Flame Retardance. Put together assembly circuits for moving up and down, such as phones, computers, electronics, plug-ins, cars, trailers, and spring cables. This Expandable Power Cable offers flexibility and reliability for your electrical needs. The retractable spiral coil design is perfect for spaces where compactness is required, allowing the cable to extend up to when needed. The copper wires ensure excellent conductivity and are insulated with a durability protective layer, suitable for both indoor and outdoor use. With its expandable nature, this cable is ideal for applications like automotive wiring, electronics, home appliances, and various electrical projects, providing a secure and flexible power solution.