set of alphabet letters s, t, u made of industrial metal blue color. white background. 3d

abc aged alloy alphabet aluminum art background blue bolt chain characters chrome cog cogwheel color construct dark design detail dirty element figure font garage grain grunge grungy hardware industrial industry iron isolated lead letter letterpress material metal metallic natural nature nut old paint pipe plate press print repair retro robot rust rusty scratch screw set shiny sign silver steel symbol text texture tool type typeset typographic typography vintage weathered white zinc