No. 271 Thank you for viewing! [Product Details] Color: Silver Size: Currently size 17 (adjustable up to approximately size 23) Inner diameter currently 17.5mm, width 17mm This is a non-branded item. I will do my best to accommodate your requests, so please feel free to comment! I have other products as well, so I would be grateful if you would take a look! Color: Silver系 (Silver-based)