Manufactured to 12/3 AWG (American Wire Gauge) specifications Each of the 3 conductors contain 65 strands of soft drawn annealed 30 gauge 100% copper wire Type 'STW' 600V thermo vinyl cold weather jacket guarantees the cord not to crack and remain flexible in temperatures below freezing Converts a single outlet extension cord into five (5) outlets at 10ft.intervals on a 50ft. cord Clear neon lighted connectors indicates that there is power in the circuit Bright neon lamps are rated for 25,000 hours of usage Cap covers keep moisture, dirt and grime out of the outlets when not in use Pro Cap outlets when used with a Pro Cap male plug will form a water resistant, dust resistant, airtight connection Pro Cap extension cords (plugs & connectors) will not pull apart from each other. This is due to an airtight suction induced seal at each connection that's created as the cords ends are plugged together Bright neon lamps are rated for 25,000 hours of usage