Bluemoona 20 Pcs - Solid Brass Screw Head Screw Back Feet 12MMX8.5MM for Purse Handbag Nailheads Spike Spot Stud Material: solid Brass Size: Head Bottom 12mm(0.5") Heigth:6.8mm(0.28") Screaw: Diameter 10mm(0.4") Package Quantity:20 sets Button Stud (Screw & Stud) Use for decorating your bags, belts,handbags, leather bracelets, shoes, Hats, and All kind of art and leather Crafts DIY