Received the delivery from CPC today, and I can confirm that these are DEFINITELY exactly the same knobs! I put the part number into Google and it came up with all the other (more expensive ones)!. And they look great. 😊
Interesting, but they have two Grub screws at 90 degrees, which means you can center them pretty well on a metric post without a brass Bush. I had bought some anyway though.
Only two slight snags are that one of the knobs appears to have some manufacturing damage at the bottom, and that my blend pot is taller than the others, so that knob won't go down quite as much as I'd like.
I'll have to email CPC in the morning about the damaged one.
Very happy overall though, they look great, and dirt cheap!