This is a set of two watch straps. Both are 20mm. They are not sold separately. All items are used. They became unnecessary after replacing the straps on a watch I own. Professional cleaning has not been performed. Please understand that they are being sold as-is. There are no cuts, hardening, or deterioration. I think the overall condition is good. There is almost no curling. I think they have been used for about a trial fitting to a few times. The silver buckle has the word "BAMBI" on the back. It is a general D-buckle type that can be fixed and opened by the strap holes. The black buckle has no manufacturer's name stamped on it. This type can be adjusted by lifting the claws with a toothpick or a flathead screwdriver. Both look like leather on the surface, but they feel like a water-repellent material with a leather pattern. I am not familiar with them, so I don't know exactly. How about it for those who have many watches, those who use them for resale or maintenance, or those who resell them separately? Leather Leather Black Brown Black Watch Watch strap BAMBI Bambi