Silver 925 Material - Silver 925 Product Name - Vatican MK4 Double Lock Clicker SV925 Engraved Inside Quantity - 1 piece - The part where the chain passes through is 4.5mm, so you can use thick chains & bails without any problems. - The safe double-lock structure prevents the loss or dropping of important pendants. - The three-dimensionally engraved cross mark is a key point. - Using this product, you can wear charms that would otherwise face sideways with just a chain, facing forward. ※ A 2.5mm wide ball chain is used in the product image. (Depending on the chain structure, it may not pass through even a 4mm chain. If you are unsure, please contact us before purchasing.) The pendant top and chain in the 1st, 4th, and 5th images are for illustrative purposes and are not included. The chain in the image is a 2.5mm ball chain. Price is for 1 piece!