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Made of flat steel, a perfectly forged double-ended ring wrench with two opening widths. Precise dimensional tolerances ensure that nuts and screw heads are not damaged. For transferring high tightening torques that lie above the known DIN norms.
The deep offset version according to DIN 838:2007 allows work on deep screw connections.
A perfect corrugated profile applies force onto the flanks of the screw and ensures an optimum force flow even on worn screws
The complex galvanised chrome-vanadium coating guarantees a very effective surface protection and perfect matt appearance.
Engelbert Strauss AB