ID this IC

[Killer Squirrel]

I pulled this IC and will be selling it, but I'm not sure which one it is. I can't find any identifying markings on it. Any ideas?

 

[Nick M]

Cartech. Best unit available by flow and pressure loss that I have seen in testing.

 

[Turbo Habanero]

i'll give ya $3.50 lol maybe you won't wanna sell it now. ^^^