... .5MM,5*3*3.0MM,5*3.5*3.0MM,6*3*3.0MM,3*2.5*2.0MM,4*2 ... .5*2.0MM,5*3*2.0MM ball bearing ball bearingitem NO.dimensions (L*W*T)describe A4320 4 ... ,finished:sand bronze,beariings:4BB,screw:4*30 screws Z6330 6*3*3.0MM diam:13mm,expandedarea:150*75*3.0mm ...