Hex Bit Driver 6mm

Fine hex bit driver for 6mm bits.
Perhaps for different types of materials, nozzles and printers will need a fine adjustment of the internal size.
That is why the 3D model in fusion 360 is attached.
If you are going to change the inner size you need to change the outer one too so that there are 4 nozzle lines around a bit the size of your nozzle. For example 4x 0.4mm = 1.6mm