Insulation: Silicone Rubber Braiding: Fiberglass Jacket: Fiberglass & Silicone Conductor: Tinned Copper Wire Rated V: 600V Specifications:1) ... , blue, gray, yellow, green, brown and more6) Insulation: silicone rubber + fiberglass braiding UL3074 Silicone Rubber Insulated with Fiberglass Braiding