Electronix Express 27WK18STR25 18 Gauge Hook up Stranded Wire Kit, 25 Feet Electronix Express Six 18 Guage wire Spools - copper wire tin plated Each Wire Spool is 25 feet in length Insulation: PVC .010" Volatage Rating: 300 Volts R.M.S. Resistant to water, oil, solvents, fungus - Flame Retardant