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Collection of screw heads. Background of screws and dowels. Levitation of objects on a white background
The worker screwing plasterboard to the ceiling. He is using special electric screwdriver and drywall lift. A red plasterboard improve the fire resistance of ceiling structures.
old vintage screws
Steel turnbuckle and sling steel or Steel Wire Rope Sling and metal cable clamp connected with screw bolt.

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