1.OD12mm,ID8mm metal tube,length 120mm with M10X1 screw at the end,fix to machine or other plate by screw easily 2.OD10mm ID5mm gooseneck tube connected with the metal tube,length 300mm, can support 0.6kg 3.OD8mm ID4mm gooseneck tube fixed with the OD10mm gooseneck tube,length 300mm, can support 0.3kg, 4.the end of OD8mm gooseneck tube amount with a fitting, OD8mm,ID6mm, it is easy for assembly with the probe. 5.Total length 720mm, that means the probe adjust range at Diameter 1200mm, can full cover the range of the probe. 6.OD8mm gooseneck tube easy for bend/change probe position and keep position, User can adjust the OD8mm gooseneck at small range easily, when user would like to adjust the probe at big range, he may be able to adjust the OD10mm gooseneck tube to suit for big diameter and keep probe position. 7.Chromeplate surface then coated white PVC 8.We can adjust the design to suit for client special request. Welcome to contact us for more technical details.