The DUO-S is compatible to the SHOPPER-system. If more space is neede for transport, the SHOPPER-system will be provided. The DUO S can tightly be fixed to the SHOPPER-elements. This keeps the case mobile. You can easily "drive" the case on even levels, in workhalls, on construction sites and in headquarters. If using the combined case isn't possible, you can seperate the SHOPPER and put back on a lid. Then you have 2 cases seperated, to be used and carried as usual.

There is the possibility to work easily with and out of the jointed combination of DUO S/SHOPPER. Through the higher position of the tools inside the case, working will be found more easier, without any bending down for taking the materials.
The DUO S cannot be fixed straight to the SHOPPER Sorti, as there are technical reasons. Therefor one of the 3 further elements has be placed in between.