Bluemoona 20 Sets - 10mm 3/8" Solid Brass Screw Head Screw Back Feet CHICAGO Binding Screws Binder Posts Back for Purse Handbag Nailheads Spike Spot Stud Material: solid Brass Size: Head Bottom 10mm(3/8") Length:5mm(3/16") Screaw Diameter : 10mm(3/8") 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