Very stable, but by no means universally!

I have this wall mount with a 9 "Tablet 16: 9 format ordered as in the item description specifically to the universal fit for 7 - 12" Tablets should be noted. This note is misleading!
The holder fits for either the 9 "Tablet, nor for my 7" tablet.
Generally one can say that there is hardly Tablets in 16: 9 format are suitable for the Sytem. The holder can be used up to about 21.5 cm in the range of approximately 16 cm.
Tablets in 16: 9 format but are usually narrower and, depending on screen size, even wider.
So that was when the newly appointed 9 inch model with the fit of anything ever. The 7 "device that indeed fit into the holder in the longitudinal format, side controls and connections have been the retaining claws however partly obscured. So even vinegar! Even with 10-inch wide-format devices, it should already be a problem.

Who but a 4: 3 Tablet has, can confidently purchase the stable support system at home, when his unit size is in the range of the above dimensions.
Since it but unfortunately in the market are not many good wall mounting systems for tablets, this also is very inconspicuous and flat and well priced remains reasonably under, I decided that 9 "16: returned 9 Tablet and me a 10" in the device 4: 3 format to create, that fits in any case in the holding system.
Because an evaluation without awarding stars here unfortunately not possible, I give for the good quality of the holder system 4 stars.
The product description would of me, however max. Get 1 star. The misleading Hniweis the universal fit for ALL TABLETS from 7 "to 12" will only lead to many unnecessary returns. ("All Tablets" even very important!)
Rather, the provider should rather add the minimum and maximum size to the compatible Garäte, better yet, a list of matching Tablets, his description.
And since there are different versions: Yes, I have ordered the universal holder size and also receive.