The only drawback, why there is no 5 star, is the poor packaging. They were delivered in the ordinary cardboard / plastic wrap in an air cushion envelope and exposed to apparently any pressure. The Papprückwand had therefore strongly pressed to the lamps, so that when unpacking glued small Papprückstände to the lamps.
As halogen lamps are indeed very hot, I have replaced the residue with a cotton swab moistened with water.
The latter was of course not so pleasing, reasonable price like the however somewhat again,