Adjustable Mounting Arm 50W LED Dock Light 5500 Lumens With Built-in power supply Adjustable Mounting Arm 50W LED Dock Light 5500 Lumens With Built-in power supply are  coated with yellow powder ,well-made steel swing arm ensures excellent corrosion resistance. The base light can be rotated on a unique bracket to repair the loading and unloading platform opening, has high visibility .The manual adjustment knob design makes the light directly rotate 360 ° by hand. The 45-inch rocker arm allows you to precisely align the beam with the required brightness. Helps increase employee comfort and productivity