Beautiful Bead Pyramid Studs Spots Punk Spikes for DIY Craft Leathercraft Clothing (100pcs), Black DIY craft studs spots punk spikes 100pcs. Cool and fashion sheet metal studs. Easily attaches to material with 4 prongs to hold securely. Trendy studs are great for dog collars, phone case, Punk, Gothic, and any custom leather work. DIY accessories, fully showing your special taste and personality with these pyramid studs.