Сoncrete metal fastener. old cement fasteners with metal tubes.

flower plant leaf garden green produce woodland jungle tree forest wildlife shrub food grass nature lawn wildflower soil herb сoncrete metal fastener old cement fasteners tubes architecture backdrop background basement big build cement close-up closeup column concrete concrete metal construction corrosion detail equipment expansion fastener fix fixture foundation frame framework green grey industrial industry iron leaves light pillar metallic nut object old pole post power pylon repair rusty steel stone structure support vertical white work