Bluemoona 50 Sets - Head Button 8mm 5/16" Brass Stud Screwback Screw Back Spots for Leather Rivet (Bronze) Material:Brass Color:Bronze Size:Head Button:8mm(5/16")Button Hight:7.7mm(0.3") Package Quantity:50 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