test socket converter E27 to B22

In fact if it exists on the French market nb bulb sockets bases converters
the bayonet socket (= B22) to the large screw base (= E27) or the big screw base (= E27) to the small screw base (= E14?) ..... it does not find E27 to B22 that allows to use older bayonet bulbs in new lights (large screw base).
So I was very pleased to find this model- which was delivered by the PROMPT Warm Light Company. One regret = no package insert stating in particular the maximum power of the bulb used on this converter (60, 75 ..100 Watts?) Metal compound and ??? (We will not make too much account if it is ceramic or plastic that may melt .....) especially as I chose this model CHER (3.00 each) then that existed on your site other less expensive models = so I hope they are better but only the use can afford to really evaluate the product ...
Unless other internet users have purchased there much longer than month
Cordially
DRZ
Cordially