This is a set of 10 keyholder kits made from cut scraps of vegetable-tanned leather. Thickness: 2.4-2.6mm Includes rings and rivets (fasteners) Cut only, not polished. Tools and the sample cat keyholder are not included. Natural vegetable-tanned leather, so stamping and dyeing are possible. You can also enjoy the aging of the leather as it changes to an amber color. These are scraps from the edges of natural leather. Thickness and hardness are not all the same. There may be discoloration, wrinkles, and scratches, and each piece has a different appearance. Please understand this before purchasing. A set of 20 is also available for 2250 yen. Please comment if you would like to increase the quantity or have any questions.