NEEWER Four-Hold Multi Tricolor Studio Light Bulb Holder Mount Bracket (Bulbs not included) Light Holder: 4 x E27 light holder (Bulbs not included in the package but sold separately) Power Supply: AC110-130V/50-60Hz or AC200-240V/50-60Hz Softbox Adapter: Metal adapter. Fits for quadrangle and octagonal softboxes. Fuse: 5A (Refer to the actual product)