This series uses (2) 24 gauge bare copper center conductors and a serve shield for quiet operation. The outer jacket is a durable and flexible matte PVC compound. Available with alternate choices of connector brands to meet different preferences and price points.Available in black blue green purple red and white. Neon colors available are neon blue neon green neon orange neon pink and neon yellow.Common lengths (in feet): 1 2 3 6 10 15 20 25 30 50 75 100. Other lengths available upon request