I have made a bunch of bends on stainless with my 3/8 and 1/4" benders, and they work great. I'm sure they've made a lot of bends before I bought them too. We made thousands of bends on stainless gas lines with the benders I used at work....Imperial eastman and Parker. They are made for stainless. The rollers might be a nice feature, and probably make it easier to bend, but I doubt the bends are of any better quality.