What can I say, it works. The new Logitech 710+ has already installed these rings. I think you can try out BLUE at all switches. This clack yes type of construction already. (So far I have not right in the head) In a Razer BlackWidow it will bring nothing, because this keyboard clicks furchbar loud.
The keyboard is quite low, and the point at which the key is hitting shorter and softer through the rubber, but does still perfect from. I'm very satisfied.
To assemble: My tip to have a second keyboard for lard. :) A nut of a ratcheting box, I have used a 6mm nut. Press and hold the O-rings on the web and then pressed with the nut and a rotary motion down. Took less than 20 minutes.
My wife is pleased that it is no longer quite so loud and I am pleased because I can still use my beloved Mechanical keyboard.