This is a bonus item I received when I purchased a product. I can't have nail art due to my profession, so I'm selling it as I don't need it. It was given to me as nail parts, but the rhinestones are about 6mm in diameter. DIY parts might be more appropriate. I think they are made of plastic. The colorful ones have snowflake-like parts, and the purple-toned ones have ribbon and bear-like parts. I'm also considering selling them separately, so please comment if you'd like to do so. I plan to ship them via Yu-packet Post mini, wrapped in bubble wrap, etc. If you have any other questions, please comment.