Just took a late lunch and cut/installed the Trex as a cutting edge, works fantastic. I ran it in the road, clearing a few piles, and on the drive way, no more scraping, and it seems to work almost as well as the metal cutting edge. I did reuse the bolts for the metal cutting edge, which are a bit short, so I wasn't able to use the lock washers, just the nuts, and I did have to counter-sink the flat (external) side for the flat bolts they used, its not perfect as I don't own a counter sink/bore tool, so I just rounded it out with the drill bit. If anyone wants pictures, I can grab a few, but hypothetically I just got 4 cutting edges (won't use them in the summer, will go back to the metal) for $16 as I drilled down the center of the Trex, so can flip it once its worn out.