I don’t have any paperwork, the screw pushes out on the four blades and it’s very sturdy and quite adjustable for conical bowls. For straight walled bowls I prefer the Pipnet set. I have two of those as well.
Duane, it saddens me deeply to hear this, I was somewhat aware of your health situation by inference from your posts, but didn’t think it was so imminent. If there is anything I can do for you or your family, please contact me directly.