Received today and immediately started straightening wood biscuits. I was concerned that my 2-1/4 hp router wouldn't be able to handle this bit. I was wrong. This shot is incredible. Cuts through butter like a hot knife. There are cheaper bits that I haven't tried, but I still rate them a five for their solid construction and four cutting carbides. I give it an A for durability based on my experience with the grade and the thick carbides that will certainly hold up to many shapes. Worth every cent for me.