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. There are fixed brackets on the top and bottom, with two connecting wires, the inner thread specification of the middle hole is M10, and the other end of the wiring terminal can be tightened when installation.What should I notice?1. Please turn off and connect the power supply during installation. 2. Please do not pull the wire to avoid poor contact.