10mm All Thread
Hollow Bar with 10mm Threaded Outer
These hollow threaded bars are really the LEGO blocks of lamp building. Take your time to get the correct size as cutting it yourself is time consuming. From centre stems of table lamps, to arms of a chandelier these bits of all thread are found in all light fittings somewhere.
Before starting any electrical work, always switch off at the mains. If in doubt consult a competent electrician