Mannesmann Wean Kpw 25 Vmr, Full Die Pilger Mill Maximum Diameter Starting Shell: 1" Finished Tube Size Range: 1/4" To 3/4" Maximum Length Starting Shell: 24' - 0" Die Diameter: Nominal: 8.062" Maximum: 8.188" Minimum: 7.937" Pinion Pitch Diameter: 7.714" Working Die Length: 12.000" Full Ring Die Stroke Of Machine: 15.551"