Here are four watch straps. All four are 18mm. They are not sold separately. All are used. They became unnecessary after replacing the straps on a watch I own. Professional cleaning has not been done. Please understand that they are being sold as-is. There are no breaks, hardening, or deterioration. I think the overall condition is good. There are almost no peeling or scratches. I think they are at the level of having been used a few times. In particular, the two brown straps have no traces of pins in the holes and no bending, so they may be unused. The orange-ish one has a slight gradation, but I think this is probably a vintage-style finish. How about these for those who have many watches, those who use them for resale or maintenance, or those who resell them individually?