Thank you for viewing. This is a wheel for a Rimowa suitcase caster. It is 50mm in diameter. Although it is a used item, the rotation is very smooth, so I think it can still be used. It can be used for repairing or replacing damaged casters. [Color] Black [Material] Plastic, Rubber Please consider this item with the understanding that it is used. I am also selling this item on other sites, so please forgive me if it is out of stock due to timing. Thank you.