Sitzt, wackelt und hat Luft (Fits, Jiggles and Hangs Loose)*
Purpose of a docking station for HDDs is the frequent and fast change of those. Nothing may jam, get stuck or be frail. This applies even for the 100th or 1000th change. The IB-111 comes with the best qualifications: first of all the solid aluminium case.
*saying of German craftsmen