This choker uses 4mm diameter domestic round leather cord. It's a thick choker that suits large pendants. (The outer diameter of the metal fittings is approximately 5mm.) It's also recommended to wear it as is for a simple look. The basic specifications are: Leather color: Black Metal fitting color: Silver Metal fitting type: Large plate clasp Length: 45cm These are the specifications, but changes are possible upon request. If you wish to make changes, please see below and let us know after purchase. If we do not hear from you, we will create it according to the above specifications. - Choose from black, dark brown, natural, or brown leather cord. (Black is not available) Choose from silver, gold, or antique metal fitting colors. The metal fitting color will be the color you select. (Please understand that the color of the leather cord may appear different depending on the time of arrival and the environment in which you view it.) - Choose the metal fitting type from either an adjuster or a large plate clasp. The adjuster type allows for size adjustment of about 5cm. - We will make the length to your desired length (within 50cm). If you would like a length of 51cm or more, please let us know in the comment section. We will adjust the price. *Natural is natural, undyed nubuck leather. The color may vary in shade depending on the time of arrival. We also have other types with different leather thicknesses available. If you would like to add length or purchase multiple items, please comment before purchasing. We do not offer discounts. If you have any questions, please feel free to contact us. Material: Genuine leather Material: Genuine leather Color: Black