The Knightsbridge Range of Screwless Style Wiring Accessories. Available in 5 stylish finishes with an ultra slim profile design and high quality metalic switches. The screwless design features an easy clip on cover, an internal gasket for moisture protection and is contructed from durable, high temperature resistant thermoset material. Choose from Polished Chrome, Polished Brass, Matt Black, Black Nickel and Brushed Chrome and each range has the new USB Adapted Sockets, ideal for charging your device and keeping valuable sockets free. A 5V DC 2.1 Amp rating means both USB sockets can be used simultaneously alongside the 13 A socket.