Wire Lamp Clamp. It is made of cgrome plated hardeened ferromanganese line with diameter of 3.0mm. It is the best choice of ceramics lamp with rectifier. Plated chromium to be brighter and prevent rust build on the copper bottom. Solid and heat resistant ceramics lamp cap. independent power switch. bear max 200W. equip strong spring clamp device. fixed structure and efficient heat dissipation ability. pass european CE certificate and conform ROHS environmental protection requirements. suitable to ceramic lamps, sunlight and metal halogen lamp.