Insulation: Our 16 AWG wire is sheathed and insulated. Ultra Flexible Type III 26/0.0100 Stranding, white PVC jacket, red & black conductor sheaths, tinned & stranded. Our tinned copper wire, double conductor, 16 gauge wire is sheathed in a 100ft roll and designed to perform in marine environments. This flexible, type III stranding, oxygen free duplex tinnder copper wire 16 gauge is rated to 600v marine grade wire. Insulation: Our 16 AWG wire is insulated and is perfect for harsh external heavy-duty marine wiring and other outdoor wiring projects. (Note: this is not aluminum wiring). Insulation rated 105°C/220°F dry and 75 C/167 F wet. Flexible even in extreme cold (-40°F/C). Engineered to the highest standards, our marine electrical wire meets SAE, ABYC, UL, and Coast Guard requirements. 2x26 strandsx0.25mm This robust marine power wire resists salt water, battery acid, oil, gasoline, heat, abrasion, and ultraviolet radiation. Durable: You need boat wire that will withstand the el