Thank you for your interest in the product. [Product Description] Product Name: OYSTERFLEX Rubber Strap Brand: ROLEX Size: E (Attachment side 21mm, Buckle side 15mm, Length 550mm) [Condition] Usage: I attached it to my watch after purchase, but it was too big, so I removed it and stored it. Notes: Please understand that this is a used item, and those who are sensitive to such things should refrain from purchasing. [Other] Please ask if you have any questions.