THHN Wire, 600 V, 75 A, 6 AWG Conductor, Soft Drawn Copper Conductor, 249 mil OD, 500 ft L, 30 mil Thick Insulation, Stranded, 19 Strands, PVC Insulation, Nylon Jacket, Black Jacket, 5 mil Jacket Thickness, 90 deg C, Spool