These trendy pyramid studs are a rockin' finishing touch to your DIY punk rock project! They're interesting additions to your hand made jewelry supplies. These metal studs are perfect for sewing on leather bracelets for a goth glam look, or get creative and string them together or with other metal accents to create unique earrings, necklaces and bracelets! Metal. (50 pcs. per unit) 7mm x 5mm with 1mm holes.