RUBYCA 30 Sets Gold Color Button Spike and Studs Metal Screw-Back Leather-craft DIY 8MM X 8MM Package Includes: 30 Sets of Head Button Screwback Studs w/ Chicago Screws for Leather-Crafting Material: Top Quality Zinc Alloy Metal &#10084 Come with Genuine RUBYCA Zip-Bag Screw Type: Phillips / Slotted &#10084 Shape: Round Base Button Shape Color: Gold &#10084 Size: 8mm = 5/16 (Height) &#10084 Base Diameter Size: 8mm = 5/16 Use in leather accessories, jackets, belts, shoes or bags &#10084 Great diy crafts & decoration supplies