This is a flat receptacle from Toolbox. It's a built-in bracket type for walls. There are a total of 7 pieces. The listed price is for all 7, but you can purchase them individually. Please specify the number of pieces you need in the comments, and I will accommodate. The price for individual purchases will be negotiable. The following is a quote from the manufacturer's website: "This lighting allows you to feel only the light of the bulb by embedding the socket. It can be used on walls and ceilings. The lighting fixture blends flatly with the wall without being obtrusive. The base ring is designed to enhance the presence of the bulb, even when it's not lit. It's a lighting fixture you should use when you want 'pure light to be there.'" White is suitable for blending with white walls, and also suits gentle atmospheres like white wood walls. This fixture, called a direct-mount type, requires an electrician to connect the wiring coming from the ceiling or wall. Please ask a contractor or electrician to install it. Retail price: ¥4,850 These are unused items because I purchased something else before starting the installation work. Thank you.