I was concerned that these might be a bit on the flimsy side but they seem sturdy enough. I have used the one size that I needed and it worked well the grind went through the tube smoothly and it fit my filler just fine. I do not make sausage every day so not sure if these are built for that kind of use and compared to my previous tubes from another filler that did not fit my new one they seem just as well built. They cleaned up nicely and I did not see a hint of rust like you would see on some low quality stainless. I really should have ordered the filler with metal tubes but at the time the extra cost was a bit more than I wanted to spend at the time. The plastic tubes worked fine as well but think the casing goes on these a little bit easier and come off just a bit more smoothly. I cannot say how well these match up with casings you can get but for the size I use it worked just fine. The ends might be a bit sharper than the plastic ones and I did pop a hole at first when trying to get the casing on the tube but I loaded enough casing to fill with nearly 18 pounds of sausage with no other problems and no holes. I don't suspect that this is a problem for most but would mention it in case itis something that someone with more experience than I would be concerned about. I do think that the one issue I had was trying to put the case on the next size up from the one that I ended up using.