the front surface is steel, stainless steel, aluminum, the back surface is light gray, smooth, very fine, with light, top-bottom e

abstract alloy aluminum back background backgrounds bright brightly brushed chrome clean closeup color design detail fine front glossy gray grey grinding highlight image industrial iron isolated light line macro material metal metallic new panel pattern people plate polished reflection sheet shiny silver smooth square stainless steel surface technology template texture textured topbottom very wall wallpaper web