Nickel Plate, Heel Bar Buckle, Solid Brass-LL This item is made from Low Lead Brass under 100ppm Size refers to inside dimension https://www.buckleguy.com/b7106-1-1-4-nickel-plate-heel-bar-buckle-solid-brass-ll/ Please let us know if you have any questions about our hardware! We would love to help! info@buckleguy.com (978) 213-9989 www.buckleguy.com SKU:B7106-1E-NP-LL Leather Craft, Hardware, Brass Buckle, Fossil Watch Straps, Solid Brass, Belt Buckles, Antique Brass, Key Holder, Leather Crafting