Set of 6 black button covers. 5 pieces with a diameter of 2.5 cm and 1 piece of 3 cm. I used these to make a black coat with colored buttons suitable for mourning wear. I'm selling them because I got another coat and no longer need them. I lost one and had to buy a replacement, so one is slightly larger. It's not very noticeable once it's on the button. I covered buttons with a diameter of 2.5 cm. I bought these at Yuzawaya.