Advantage of Tinned Copper Wire: Compared with bare copper wire, it has higher flexibility, stronger corrosion resistance and oxidation resistance, which can greatly extend its service life. In addition, tinned copper wires can also prevent the insulating rubber from becoming sticky, causing the wire core to become black and brittle, and improve its solderability. High Quality Wire: Made of 18 AWG 98.4FT(30M) black wires and high-quality PVC sheath, which has good electrical conductivity, high mechanical strength, flame retardant, anti-aging, acid and alkali resistance, and waterproof Excellent Performance: Wire operating temperature rating of -20 of 80 respectively. The hook-up wires are designed to operate under stringent conditions. The jacket material is flexible and environmental friendly PVC, which can be twisted and extended it freely as you like. Wide Application: Connection extension cable linkable for ws2812b ws2811 addressable rgb ic led strip light. For electronic