This is a flat receptacle from toolbox. It is a wall-embedded type bracket. There are a total of 7 units. The listed price is for all 7 units, but you can purchase them individually. Please let us know the number of units you need in the comments, and we will accommodate your request. The price for individual purchases will be negotiable. Below is a quote from the manufacturer's website: This is a light fixture that allows you to feel only the light of the bulb by embedding the socket part. It can be used on both walls and ceilings. The lighting fixture does not assert itself and is flush with the wall. The base ring is dedicated to enhancing the presence of the bulb so that it looks good even when not lit. This is a light fixture that we want you to use when you want "purely just the light to be there." White blends in with white walls, and also suits a gentle atmosphere with light-colored wood walls. This fixture, called a direct-mount type, requires a licensed electrician to connect the wiring coming from the ceiling or wall. Please request installation from a construction company or a licensed electrician. List price: 4,850 yen I purchased a different item before starting the installation work, so these are unused items. Thank you.