... >plain style,serrated style, and I bar type, etc 2>bearing bar size:20*3--100*10 3>bar ... Bar) Specifications (mm):The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x ... 10,the specification of Isection type is 25 ... , 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, ... 70 x 7 x 4, 75 x 7 x 4, etc.2) Bearing ...