Innovative ratchet ring/fork-wrench with stop-ring that prevents a slipping of the nut or of the screw.
The special 12-edged ring serration with flange drive permits protective screwing and provides for higher transmission of force.
4-edged, 6-edged and 12-edged screws can be taken.
The specially hardened chromium-vanadium steel provides for high load-carrying capacity.