These are high-quality buttons used by designer brands and factory brands. They have a beautiful black color with brown marbling. Approximately 20mm - 9 pieces Approximately 15mm - 9 pieces There are individual differences due to the natural materials. I believe the material is genuine buffalo horn, but please be aware that there is a possibility of other materials. Not only for replacing buttons on brand-name items, but also on Uniqlo and fast fashion items, changing the buttons will give them a more luxurious feel. I hope someone will use them.