This is a box containing 2000 rivets. The size is approximately 9mm for the head diameter and 12.5mm for the leg length. These are leftover stock from when I was in the bag-making business. They have been stored at home for a long time. Some rivets may have scratches or scuffs from contact with each other. The price reflects this. Please be aware that the condition of the rivets inside the boxes may vary. Please refrain from purchasing if you are looking for a perfect product. Thank you for your understanding. Price reduced.