steel and stainless steel rectangular plates are made into grooves for inserting black screws. produced through standard machinery

according alternating angle are arrange automotive background because black bronze car check closeup components control detail discs durable energy engine engineering equipment flange flanges gloss grooves hardened holes industry industryn inserting look machine machinery made man metal metallic new nobody part parts pattern piece plates procedures process produce produced production quality quantity rectangular rods screws shafts silver square stainless standard steel strong then thick threads trained