Thank you for viewing. The drain plug in my bathtub wasn't working well, so I bought a new KAKUDAI drain plug. However, I didn't use the chain, so I'm selling the chain only. KAKUDAI Bathtub Drain Plug Chain Ball diameter: 4.5 mm, Length: 65 cm This is for the chain only, and the outer box is not included. If you need it, please consider purchasing.