... . Quick, easy replacement of the rollers by user, saving time and $$5. Line screen: 100, 200, 300 400, 500, 600, 700, ... Pattern is pyramid,comby,dot,mess dot,diamond,hexagon,sloping line and others.Heating RollerCooling RollerHRC55~58.Inner structure.Precision: temperature difference ... Cooling Roller, ink prooferetc.Max diameter is up to 750 mm, and max length is 6000 mm.Raw material is Carbon steel, ...