I recently ordered natural cork stoppers again. These are natural cork stoppers punched from cork oak. It seems that thermosetting adhesives are used in the commonly available compressed cork, and I don't want to use them for small birds like my parakeet... I'm offering 50 pieces this time. As shown in the photo, the sizes are random. (80 yen per piece) x 50 pieces + 210 yen (for Nekopos shipping) = 4,210 yen. * If you let me know how many you want in the comments section, I'll create a special listing for you. If you tell me what kind of bird you have, it will help me decide what to include as a bonus, and I'd appreciate it! (#^.^#)