stainless steel(201#) hinge diam:11mm,expandedarea:100*75*2mm,finished:sand bronze,beariings:4BB,screw:4*30 screws item NO.dimensions (L*W*T)materialdescribepakagingZJ-24*3*2.0MMstainless steel(201#)diam:11mm,expandedarea;100*75*2mm,finished:sand bronze,beariings:4BB,screw:4*30 screws(head,pin and screws are iron,body is stainless steel201#)case.50pairs/casecompany certification: hinge 4*3*2.0MM