The tube looks like a neon, no apparent radiator, but it illuminates only on a transverse half in a fairly cool white close to that of neon. In practice, the replacement is very simple: it is necessary and sufficient to replace the one supplied by the starter, put the tube in place of neon and everything must go! But beware, the replacement can be done only on configurations with ferro-magnetic ballast and separate starter, those with a replacement electronics must undergo a more complicated modification (each end has two blades, it will bring the two pins to 220V ends and interconnect the two remaining pins of the ends).
Ships from Germany, the product arrives quickly and is very well packed, I ordered in packs of 2, but one of the tubes has only worked a few hours ... The instructions are in English only.
Caution, replacement of neon LED is not standardized: some ask to remove the starter and bypass the ballast, others to replace the starter with a short circuit and others to make changes wiring .. To my knowledge, there are only Philips and Osram offering a tube with an electronic allowing replacement without any manipulation. The characteristics of the data sheet are those given on Amazon.