Check the listing for details. SILVERWORM Real Silver Plated Copper Silicone Wire 12 Gauge Super Efficient. Condition: New. Listed at 46.13 USD. ACER Racing's revolutionary SILVERWORM 12AWG Genuine Silver Plated Copper Super flexible Silicone wire. For the lowest resistance connection. Remember: SILVER has the LOWEST electrical resistance of any metal followed by copper then gold. Yes that's right, silver has lower electrical resistance than even gold. So we invented SILVERWORM: silver plated copper the #1 and #2 lowest resistance metals combined in a multi strand format just as flexible as our world famous Superworm wire. Our Silverworm 12AWG wire has even LESS electrical resistance than 8AWG or 10AWG copper wire making it our most efficient electrical wire. Less resistance means more power, less heat, faster & longer run times. Outside diameter of jacket is 4mm680 Strands10 ft total wire: 5 ft red 5 ft black