... is stainless steel201#)ZJ-105*3*2.5MMstainless steel(201#)diam:12mm,expandedarea:125*75*2.5mm,finished:sand bronze,beariings:4BB ... #)ZJ-146*3*3.0MMstainless steel(201#)diam:13mm,expandedarea:150*75*3.0mm,finished:sand bronze,beariings:4BB,screw:4 ... and screws are iron,body is stainless steel201#)ZJ-173*2.5*2.0MMstainless steel(201#)diam:10mm,expandedarea:75*62.5 ...