Good but depends on your cat
This product does exactly what it says it does. Its the terminator of fur removing cat brushes. It removes an amazing anount of hair. I have 6kg Nebalung.. super fluffy with really really fine hair. This product IS great but Listerfiend really didnt like it. It seemed to pull on his hair too much and get caught up. Seemed to cause discomfort which would lead to him trying to give me a playful warning clamp down on my hand. A normal brush he absolutely loves and will come running for.
It does the job of removing the hairs on our (short hair) cat very well so is 5 stars for that but it does need two hands to remove those hairs from the brush despite its release button so that leaves the cat free to roam off at each emptying unless you have a glamorous assistant to help you (or your cat decides to remain). It is possibly a little expensive but that is subjective.