... The Cams &Cylinder Can Be Controlled.TECHNICAL DATA TYPE 3Inch/F Diameter 18"-46" Gauges 16G-32G NO.Of Feeder 54F ... of dual-size Dual-size single -size Size Interchange one machine have two diameters for use only one diameter Order can ... accept two diameters’order , less investment, quick recovery , and reduce machine idle only can accept one diameter’s , moreinvestment,slow recovery ...