The offer (ended) was interesting, especially at the price where they sell the bulbs nowadays, but surprises coming out of a first bulb pack to chance: no way to make it work. So I have all tested one by one. Verdict: 10 ampoules on these "new", were 2 HS and a third, broken in its box!
Worse, among those that seemed to work at first sight and I could install on my lamps, has not held a week (not being turned on only 2 or 3 hours per day) !!!
Fortunately, the SAV Amazon reimbursed me, but my advice would be to avoid a catastrophic product!