Features:Designed to work with all E27 screw light.Built in umbrella holder， perfect for holder your photo umbrellas.It mounts on any standard light stand.Easy to use screw， easily adjustable for different shooting angles.Independent two on / off switch.The long cords help you move them freely to position it for best lighting effects.This adapter/light holder will fit all your lighting needs from photo flood to strobe lights.Specification:Socket: E27 Double twins bulb socketPlug: US PlugPower: 110-130VSwitch: ON / OFF controlCable Length: About 160cm / 5.25ftpackage size: 20 * 16 * 7.0cm / 7.9 * 6.3 * 2.8inPackage weight: 455g / 16.0ozPackage List:1 * E27 Double Twins Buld Holder (US Plug)Note:This item only includes the Double twins bulb socket.