[Easy Installation for Duct Rails] Simply insert the fixture into a commercially available duct rail (lighting rail) for easy installation without tools. The appeal of duct rail lighting is its flexible layout, allowing you to install multiple fixtures where needed. It's also recommended for rental properties and commercial lighting. (Note: This product is sold as a duct rail fixture only; the rail is not included.) [E11 Base] Use with spotlight-style bulbs with an E11 base. Compatible bulbs are up to 5cm in diameter and 7.5cm in length. Not only can you freely choose from LED, halogen, and other light sources to suit your needs, but the replaceable light source ensures long-lasting use. (Note: Bulbs sold separately, supports up to 60W.) [Adjustable Beam Direction] Adjustable up and down by 90 degrees and left and right by 355 degrees. This spotlight is ideal for pinpoint lighting, such as wall art or display shelves. [Rough matte black finish] The subdued black adds a subtle accent to any space, and the compact, streamlined form blends in naturally without compromising the interior ambiance. It matches Scandinavian, modern, and industrial styles. [Fits any space] Suitable for any space, including kitchens, living rooms, entryways, studies, cafes, and stores. Installing multiple units creates a more atmospheric lighting effect.