That's worrisome. Part of the problem is that there's no real standard definition, aside from the color. Multiple manufacturers with completely different materials and processes can make knots that look identical in photos, are marketed the same way, yet perform quite differently. Perhaps the worst part is that we then end up comparing apples to oranges while thinking we all have apples. It's a whole different demention of YMMV that shouldn't exist.Some of the handmade brushes I bought on Etsy have great handles but the knots of so-called Tuxedo knots are not as nice