RUBYCA 30 Sets Bronze Color 8MM Big Mushroom Studs and Spikes Metal Screw-Back Leather-Craft DIY 8mm Package Includes: 30 Sets of Mushroom Screwback Spike Top Bucket Studs w/ Screws for Leathercraft Material: Top Quality Zinc Alloy Metal &#10084 Come with Genuine RUBYCA Zip-Bag Screw Type: Phillips / Slotted &#10084 Shape: Round Mushroom, Top Bucket Color: Bronze &#10084 Size: 8mm = 5/16 (Height) &#10084 Base Diameter Size: 11mm = 7/16 Use in leather accessories, jackets, belts, shoes or bags &#10084 Great diy crafts & decoration supplies