50J0357 - 5/16 M8 Insert Nut Driver
For use in a drill or drill press, this insert nut driver has a standard 1/4" hex shank. The shaft does not engage the insert threads, and the insert is held in place with a ball detent.
The insert is driven by wings that engage the insert slot. The wide shoulder acts as a stop, contacting the work when the nut is sunk just below the surface.

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5/16 M8 Insert Nut Driver
For use in a drill or drill press, this insert nut driver has a standard 1/4" hex shank. The shaft does not engage the insert threads, and the insert is held in place with a ball detent.
The insert is driven by wings that engage the insert slot. The wide shoulder acts as a stop, contacting the work when the nut is sunk just below the surface.
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