6mm GUNMETAL screwback rivets. SET of TWELVE. ~ Plated brass.~ Spikes measure: 6mm head x 7mm high ~ More SPIKES, STUDS, & RIVETS! www.etsy.com/shop/UrbanLeatherSupply?ref=hdr_shop_menu§ion_id=17902125~ Main shop page: www.etsy.com/shop/UrbanLeatherSupplyOur photos may have been edited to reflect the most accurate colors. It is important to note that different screens and monitors can reflect colors differently.