Generic Metal Silvery Annular Ring Buckle 1" Inside Diameter Loop Ring for Strap Keeper Pack of 15 Annular ring inside diameter:1" .Wire diameter:0.16 inches. Material:matal. It is suitable for 0.6"- 1" width strap. Made of metal material. This annular ring buckle is both component and ornament for shoes, handbags or backpacks