Thank you for looking. I don't know anything about light bulbs, so please judge from the photos. I think I threw away the burnt-out bulb during decluttering, so I don't know the size. I wanted to put it in a certain place, but it was too big and I couldn't. Most of the light bulbs in my house are inserted sideways/diagonally, but I want to talk to the designer for about an hour about why they can't just be inserted from directly above. This item will be removed at the end of this month. Thank you for your understanding and cooperation. *Please do not purchase if you are looking for new or perfect items.