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indra / Cranked wrench key


Once a screw does not release by the first try because it is tightened well or rusted, many people start asking themselves: Do I turn it the right way?
Lots of handyman try to figure out the right direction by turning harder and harder in both directions.
The consequences:
broken threat, broken screw head, damaged tool.
The solution: “indra“, the innovative cranked wrench key.
“indra“ is handled intuitively. The spiral-shaped torsion of its steel body shows the direction of the threat of a regular screw. As a result, the user starts turning the key unconciously to the right direction.


Hochschule Coburg

Hochschule Coburg
Integriertes Produktdesign
Coburg, Germany

Prof. Wolfgang Schabbach


Julian Rathmann

Julian Rathmann
Adendorf, Germany

Julian Rathmann