Application: Shooting aids, desk lamps, bedside lamps, fish tank lights, plant lights, and other areas where it's inconvenient to arrange lighting fixtures Specification: Lamp holder material: plastic Lamp socket interface: E27 screw port Hose material: metallic hose Hose length: 40cm (exposed 38cm) Hose diameter: 10mm Clip material: iron clip Control mode: twine management button switch Plug specification: US Plug / EU Plug / UK Plug Color:Black,White The most clip thickness is 60mm Note: The product would not contain bulb. Support power: Single head supports up to 50W lights, double heads help 100W.