This is a set of Toyostar's "MR720" one-touch simple duct rail and four Koizumi Lighting spotlight "ASE940895". Toyostar's simple duct rail can be installed with a single touch, even on ceiling lighting fixtures in rental properties, without the need for drilling. It can be attached to square hooked ceiling connectors, round full hooked ceiling connectors, and recessed ceiling roses. Please refer to the illustrations in the instruction manual in the last image for details. The LED bulbs attached to the Koizumi Lighting spotlights are Koizumi Lighting AE50503E x 3 and AE50504 x 1. AE50503E has a narrow beam angle (approx. 15°), AE50504E has a wide beam angle (approx. 33°). Both have a bulb color light (2700K). Additionally, we will include: Two honeycomb louvers (reduce glare when light enters the eyes directly) Two light diffusion adapters (widen the beam angle) These are exclusively for the LED bulbs mentioned above. I have used them with pleasure for about 10 years, and while there is some sign of use and some paint peeling, they function perfectly. I am selling them because I moved to a place without a ceiling connector for lighting fixtures, so I couldn't use them, and they were taking up space in storage. The instruction manual is included, so I believe they can be easily installed. The total retail price of this set is over 40,000 yen. How about this for your new life starting in spring? - Type: One-touch duct rail - Color: White - Accessories: 4 spotlights - Installation method: Ceiling mount - Spotlight shape: Cylindrical - Spotlight color: White - Spotlight interior color: Black