What is this?Suitable for all E27 screw bulbs, incandescent lamps, desk or floor lamps, ceiling lamps, home or office chandeliers, various DIY light fixtures, etc.What will I get?Color: BlackMaterial: Plastic, CopperHead: 3-light BaseMax Current: 4AVoltage: 250VACMax Power: 600WThread Size: M10*1Interior: Standard Medium E26/E27Overall Size: 70 x 75mm/2.76" x 2.95"(Height*Wdith)Package Included: 1pcs x 3 Light Cluster Lamp Socket, 1 x Thread Fitting, 1 x Gasket, 1 X NutAre there any advantages of the product?Made of plastic shell and copper conductor, with good rust and heat resistance. That is good as a light fixture replacement in the office or home. How to use it?All lamp heads are connected in parallel circuits.