These stationary pole LED light are very easy to install into cabinet or shelf, its adjustable angle can be adjust to your specific angle needs. Perfect for indoor Desk lighting. Exhibition hall, Cabinet, Showcase, Display, Hotel. This fixture does need to be hard wired. Use a screwdriver to screw out the bolts which connected the mounting base and main fixture. Hole cut size:0.3cm(0.12")0.4cm(0.16"). Put the wire into the mounting hole. Put the main fixture onto the mounting base, aim at the bolt hole, then fix the screws. Connect the power cords of the lamp to the 220V circuits. Save ...