Rod size(型号) Guide height(管高) Guide length (管长) Guide OD(外径) 16mm >=32mm >=320mm Ø57.5+0.5mm 19mm >=38mm >=320mm Ø57.5+0.5mm 22mm >=41mm >=320mm Ø57.5+0.5mm 22mm >=46mm >=400mm Ø71.5+0.5mm 25mm >=48mm >=400mm Ø71.5+0.5mm