I once won a stationery set in a raffle at a stationery store. As described in the instructions in photo 3, it has 9 parts and can be used for 10 different purposes. The outer case is a 10.5 cm square. Inside, the 9 parts are assembled like a puzzle (see photo). Because of its small size, it can be placed on a desk or in a bag. I kept it in a drawer at home, but I never used it. However, the surface of the outer case has been scratched when taking it in and out (it doesn't look very noticeable in the photo). Please refrain from purchasing if you are concerned, as it has been stored at home.