HONKID Keyboard Switch Silencer Cottom 4pcs Switch Silencer Pad for 6.25U Mechanical Keyboard Space Bar(6.25U)

They work just as intended... make sure to take off the plastic wrap before using. Makes it a bit difficult to take off if you don't. Hubby didn't realize he hadn't taken all of the plastic off. Still works fine.

My keychron's spacebar sounded very empty and coming from a Nuphy with their patented mount, I had to find a way to fill the void under the space bar to help with the sound. This has done the trick! The spacebar sound is way more "full" now.

Only one piece of foam (the very thin one) is useable on GMK keycaps spacebars

Bought this kit to dampen sound from my space bar. I used the 3mm poron on the bottom of the bar which added a little thock, then used the thicker foam around the perimeter of the space bar which added some nice density to it - reminds me of the old IBM keyboards a little. No change in LED performance but there's only the one in the center. I'm not unhappy with the results, but I expected a little better fit and more sound dampening for the price. I'd eye other lower-hanging fruit first like switch pads or keyboard case/backplate padding first before grabbing this one.

Used these on multiple keyboards and they improve the sound of the spacebar immensely. Great deal because you get multiple foams to tune the sound and feel to your application.