Review on Artistic Wire Beadalon Professional Deluxe 5-Rod Coiling Gizmo: Versatile Wire Coiling Tool Set for Precision Jewelry Making, 7mm/5mm/3mm/2.5mm/1mm by 38.1cm by Gelin Battle

I have a smaller version and I like it. I was looking for a coiling machine to make jump rings (and be easy on my wrists) and was thrilled to see this product. The problem is that the bar diameters given are just wrong. Looking at the bars in the pack, I could tell that the largest of them are far from 7mm, which is what I need. Of course, when I measured it through the packaging, it wasn't more than 5 mm. A rod advertised as 5mm is actually about 3.5mm. How could that happen? For this reason I am returning this item. It's a shame because they have a very worthy product. Why are their measurements so wrong?