This ceiling light is compatible with 4 E27 bulbs (Bulbs NOT included). It is fully dimmable when used with a dimmable bulb and compatible dimmer switch. The industrial ceiling lights are equipped with high quality and refined metal finishes. Each part has been designed and built with care. The black ceiling light comes with instructions and mounting hardware for easy assembly and installation. Installation may take some time and effort. Please be patient.Industrial pendant lights are designed with retro and industrial elements, ideal for restaurants, kitchens, cafes, basements, bars, libraries, bedrooms, hallways and more in a modern industrial style.