RDEXP Crystal Satellite Stone Sofa Furniture Studs Headboard Upholstery Nails Pack of 20 (Silver 20mm Diameter) Material:glass diamonds,metal bright shiny and beautiful Dimension is 20 x 34mm/0.79 x 1.34""(Dia x H) suitable for crafts,headboard,leather beds,sofas,home makeovers,and other decoration 20 pcs in one package