RUBYCA 12MM 100 Sets Metal Tree Spikes and Studs Metallic Screw-Back for DIY Leather-craft Gold Color Package Includes: 100 Sets of Tree Spike Screwback Studs w/ Screws for DIY Leather Crafting & Custom Leather Clothing Material: Top Quality Zinc Alloy Metal &#10084 Come with Genuine RUBYCA Zip-Bag Screw Type: Phillips / Slotted &#10084 Shape: Tree Spike Color: Gold &#10084 Size: 12mm = 15/32" (Height) &#10084 Base Diameter Size: 8mm = 5/16" Use in leather accessories, jackets, belts, shoes or bags &#10084 Great diy crafts & decoration supplies