YEHAM500PCS Pyramid Shaped Punk Rivet Stud Nailhead for Leathercraft & Belts(Bronze,8MM) Size: 8 MM Material: Alloy Made of high Quality Alloy, easy set by hand on leather and fabrics. They are perfect to stud any clothes you want, put them on jean shorts, collar shirt,shoes,purses,denim They are the pyramid shape. The studs have 4 prongs on them for attaching to clothes