Brand new, unused loop parts for coin necklaces. As shown in the photo, you unscrew the part below the round loop that holds the chain, widen it, and insert the coin from the opening. It fits various coins, such as US dollar coins. Diameter: 2.5cm Recently, these seem to be rare items that are not readily available even at parts stores. The lowest price is 300 yen for 3 pieces. If you want more, I'm open to price negotiations. Shipping included. If you want all of them, please purchase directly. For single pieces, please leave a comment.