Copper futures drive the price of brass, bronze, and electrical copper.
About SAE 863|Sintered bronze bearing, same as C863. Oil-impregnated porous bronze for self-lubricating bearings. See 863 for details.
About Round Bar|The default starting stock for lathe work. It gets turned, bored, and parted into shafts, pins, bushings, spacers, and just about anything round.