Which file should I choose?
Use 9AKK107991A2997.dxf (revision A) to insert the supplied editable drawing into your layout. The ZIP contains the unmodified 9AKK107991A2997.dxf.
Use 9AKK107991A2993.step (revision A) to place the original solid geometry in your 3D assembly. The ZIP contains the unmodified 9AKK107991A2993.step.
