Extension board are made from electrical grade plastic, switches are made from good quality with more excellent switching operation, metal connectors inside has good hardness, elasticity and conductivity which gives low temp. rise and long life. used for audio-video, computer system, appliances, power tools and lighting. extension is capable of surge protection and used in normal Appliances like Computer, Motor, Refrigerator, Pressure Washer, Washing Machine, Water Cooler, Decorative lights, laptop and mobile charger and also in other applications of power supply need.