diamond diamond plate floor flooring garage grip iron metal panel plate ridged security box square steel strong texture textures tile tough beaten chipped course damaged decay paint rotten rough rust scratched spray paint white worn yellow backdrop background brown desktop grunge grungy natural orange red rusty antislip construction foot-sure grey industrial metallic regular shape shapes silver solid structure structures work elements industry large old pile piled pipe pipelines pipes abstract blue metals oxide rusted rusting wheathered green big corrosion heavy huge nut nuts thread threads tool tools