SHOCKPROOF PVC EXTENSION 4METER LONG WIRE SMALL PLUG. INDICATOR SHOWS SUPPLY ELECTRIC IN EXTENSTION BOARD ALL PARTS ARE REPLACED EASILY INDICATOR SHOWS SUPPLY ELECTRIC IN EXTENSTION BOARD PROPER EARTH CONECTION FOR SAFETY 2.PVC SHOCKPROOF BOX 3.ALL PARTS EASILY REPLACEABLE INDICATOR LIGHT ALSO FITTED. ISI MARK UNBREAKABLE SWITCHES FITTED