SB support: Why corsair, but not razer

[Morbii]

The subject basically says it all.  Why do so many spacebar kits support Razer with 6U, but very few support Corsair with 6.5U?  Are 6U spacebars used elsewhere as well? Or was Razer just early in the game?  Some other reason?

I'm just curious.

[Findecanor]

Yes. 6u spacebars are used elsewhere. There is a de-facto standard for it.
6.5u space bar is the odd one.

I think some very early Razer keyboards did fit not fit those 6u spacebars though, but they changed the positions of the standoffs in later models.