Premium quality PVC insulation layer outside; the strands inside is tin-plated pure copper and took standard rosin core solder with ease, the wires are thicker than most of the other similar products. Features higher power is supported and stronger physical features. Easy to use:Cut to any length according to your needs. Use the wire stripper to strip partial external plastic of the extension cable, then connect it to your device. Durable & FlexibleThe insulation was durable and flexible. The wire inside is stranded so it can withstand a lot of bending without breaking. Solder make better When you try to connect this wire to a solderless connector or LED strip, soldering the wire to it will provide you with a stable connection. Can work with Our 6PIN FCOB 12mm width connector kit (ASIN: B0C4855NPG and B0CLV49QVW ). ApplicationThis extension cable works great with FCOB COB SMD 5050 6PIN RGBCCT RGBWW LED strip lights.