For the price, this seems like the best value in the market to bend the occasional piece of sheet steel or wire. I've used it a few times (3/16" mild steel round bar, 22 ga mild sheet steel), and the slip roll performed as expected in each case. I haven't attempted 20 ga mild steel, so I can't speak to performance when pushed to the max. That said, if one expects to use a slip roll for much more than 22 gauge, they really need to look at a different class of machine that costs 10-20X more than this unit. I like the fact that I can clamp this into my bench vice rather than permanently mount it on my bench. As an occasional tool, it's very convenient to just pull it out when I need it. There is more lateral play in the front bottom roller than I would expect. This isn't an issue with sheet steel, but the lateral play can make it a little more challenging to use the wire grooves, If the wire starts to twist, the edges of the wire can get sheared slightly by the misaligned rollers. But it's not a major problem, and I don't imagine I'll use the wire grooves very often. While there are no graduations or scale for the rear roller (that sets the bend radius), it's trivial to adjust each side in a similar manner to ensure a uniform cylinder rather than a cone. While this is not a professional grade machine--it's a very well priced, well made unit.