The lamp set mounts to any of the Robust Lathes via the socket integrated into the headstock. A Moffatt brand articulated light is positioned on the end of the articulated arm. The flex arm on the Moffatt lamp stays put when you position it. Supply your own bulb, the fixture is rated for 100 watts. Robust recommends a 75 watt equivalent LED bulb with a âKâ value around 5,000. You can add second fixture to the arm for lighting the outside and inside your bowl at the same time.