Brass Hotfix Iron On Rivets, Flat Back Pyramid Studs, Flatback Glue on Studs, GoldenSize: about 6mm wide, 6mm long, 2.3mm thick; about 10000pcs/bag.Usage: With glue on the back, can be hot fix. And it will be sticky when glue is melting. It Can be heated by a heat press machine or an electric iron, you also can stick it by glue.