What is this piece?

[CardinalBricks]

Hello all,

I am trying to find this piece on Bricklink and no matter what I search I can't seem to locate it. I also don't know which set I got it in. If you know, I would appreciate your help! Thank you!

[greg3]

Here you go Wedge 6 x 6 Triple Inverted

[CardinalBricks]

9 minutes ago, greg3 said:

Here you go Wedge 6 x 6 Triple Inverted

Thank you so much!