... price 4.high quality Specification Type: 820, 750, 650, 600, 520, 450 Max Rolling Power (kN): 6000, 6000, 5000, 3000, 3000, 2500Max ... 360, 340, 290, 290, 290 Rolling Diameter (mm): 820, 750, 650, 600, 500, 450 Supporting Roll Max. Rolling Diameter (mm): 700, 700, 660 ... , 520, 520, 480 Min. Rolling Diameter (mm): 650 ...