This is a set of 10 heart-shaped keyholder kits made by cutting scraps from the edges 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. Since it is natural vegetable-tanned leather, it can be dyed and stamped. You can also use it as is and enjoy the aging of the leather as it changes to an amber color. These are scraps from the edges of natural leather. The 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. 20 sets are also available for 2250 yen. Please comment if you would like to increase the quantity or have any questions.