Vertical system for the plating treatment of a work piece (W), the said system comprising at least two treatment modules (100), wherein retaining devices (130) for the work pieces (W) are provided in the treatment modules (100), and at least one transport device adapted to convey at least one work piece (W) to a treatment module (100) and to transfer the work piece (W) to the retaining devices (130) in the treatment module (100), wherein the transport device comprises at least one gripping device (10), which retains the work piece (W) and has at least one respective fastening device (20, 30), and each fastening device (20, 30) comprises first clamping devices (25, 35) and second clamping devices (26), each of which are associated with one side of the work piece (W), wherein both the first clamping devices (25, 35) and the second clamping devices (26) are displaceable for gripping and releasing the work pieces (W),
- wherein the at least one gripping device (10) comprises at least two fastening devices (20, 30) that are spaced apart from one another, each of the first clamping devices (25, 35) and second clamping devices (26) of which are moveable by torsion bars (21, 31, 22) as a result of which the work piece (W) is tensioned between the fastening devices (20, 30) during clamping parallel to its first side.