1.High Quality Ultra Flexible Soft Silicone Rubber Copper Wire!Super Low Impedance,Highly Efficient!2.High strand count copper core,12 AWG silicone stranded wire has 680 strands 0.08 mm tinned copper wire,the copper strands are tinned,protecting them from corrosion and making it easier to solder.3.They are constructed with premium silicone rubber insulation.High temperature resistance 200 degree C,Low temperature resistance,in extreme cold -60 degree C.Rated Voltage: 600 volts.Outside diameter 4.5 mm,tolerance +/- 0.1 mm.4.12 gauge silicone wire spool: Blue total 250 feet.5.BNTECHGO silicone wire are widely used for model planes,model cars,model ships,lamps,household appliances,electric heating appliances,meters,instruments,motor and digital fields.Also available the right gauge wire from thin 30 AWG to heavy duty 8 AWG silicone wire.8 AWG and 10 AWG available red and black;12 AWG and 14 AWG available 7 colors(Red,Black,Blue,Yellow,Green,White and Gray);16 AWG to 30 AWG available 11 colors(Red,Black,Blue,Yellow,Green,White,Brown,Gray,Purple,Orange and Pink).