Excellent product, well finished, simple but very effective !!

Solid and well finished product (no sharp burrs).
Enables easy assembly, on silent-blocks, two hard disks or SSD at size 2.5 'in a bay at 3.5 format'.
Both disks or SSDs are mounted one above the other, without disturbing each other.
To do this, a mounting screw pack is provided (2 x 4 screws to secure the HDDs / SSDs on rods and 4 screws to attach the strips on the drawer of the cage from PC drives.
The HDDs / SSDs are perfectly maintained by rubber washers through which the screws, and can not transmit vibrations or spurious noise in the PC box (valid especially for HDDs because SSDs are inert and do no harm).
In short, a very good and effective product well thought out, highly recommended.
Delivery by Amazon within the time and in good condition. No worries, bravo!