Alpha wire 5857 18awg hook up wire 600v ptfe 305m alpha wire 5857 sl005 a 18awg hook up wire with slate ptfe insulation and stranded copper conductor the wire has excellent uniformity and a low fray design for easy handling stripping and termination suitable for a wide range of applications alpha wire 5857 sl005 slate 18awg 1930 type e hu wire teflon 100 ft