MR G

I recently bought the m12 fuel right angle die grinder and wanted to know if anyone knows if there is a 1/4" keyless chuck available? Looking online it doesn't seem like there's one? I also have the m12 rotary tool with the 1/8" chuck. I bought the dremel keyless chuck for that tool, just wanted the convenience of it on my grinder also.

Are there any variable speed m12/m18 fuel grinder/die grinder? The only variable speed grinder I see is the m12 right angle die grinder.