This 3ft long twisted insulated wire extension cord plugs into a standard 2 slot or 3 slot 120VAC socket and has a female 2 slot socket built into the male socket so that you can plug other cords in. Rated 3Amp so you should not exceed this rating as the internal tiny fuses will blow. Allows several strings of lights to be connected until the 3 Amp rating is reached . Brand new. Rated 3Amp 125VAC. To change fuse slide cover open near prongs.