25mm. This is a set of two items: one pin type and one magnet type. I searched for and purchased these because I really wanted something sparkly, but they have been stored at home unused. Since they are unopened, I cannot address initial defects such as scratches or deformation. Please refrain from purchasing if you are concerned about this. Also, please purchase only if you understand that they have been stored by a private individual. Immediate purchase ○ Payment at convenience store × Selling separately: 1,500 yen per item If you have any questions, please comment before purchasing. BTS Bangtan Pin badge badge magnet