This is a set of two Koizumi downlights. They can be installed on sloped ceilings (up to 55 degrees). I installed them once, but I didn't like the color, so I'm selling them. Please understand that these are items stored at home, so only those who can accept this should purchase them. 【Model Number】AD1244W50-A 【Quantity】2 【Other】Compatible with sloped ceilings (up to 55 degrees) Thank you.