This is a US 25-cent coin concho. I have modified circulating coins into conchos. The screw size is M4, with a length of approximately 4mm. I will also include 8mm screws for thick leather. Compatible with large jumper snaps. The photos are from previous items; the product shipped will be of similar quality. If you would like to purchase multiple items, please check the stock beforehand. I will create a dedicated listing for you. For multiple purchases, the shipping cost will be discounted from the second item onwards. Shipping will be via Yu-packet Post Mini. Thank you. #Leathercraft