Maybe I got a bad batch of poly when I used lundell products but I wasn't very impressed with it. I put poly flighting in the infeed auger on my grain cleaning setup. I had hoped this would help cracking in pulse crops. It did help (also alot less noisy) but the flighting only lasted about 65000 bus. It was completely worn out. For the price of it, I figured it should last years. I have since went back to steel. So if anyone can tell me why it wore out, I'd love to hear from you.