Carbon steels; Cast iron; Construction elements made of metal, namely, shores; Construction elements made of metal, namely, supports; Counterweight arbor assembly in the nature of a framework with weights in it made primarily of metal and also sometimes including non-metal parts for providing a counterweight for use assisting with the manually powered lifting by means of ropes, cables and/or chains of theatrical objects during the performance of theatrical productions; Fittings of metal for f...