Need an ID on this bad boy

[Royal_pudding]

So I picked uo this monster of a snail today. Think it's a Red sea Trochus. Must be at least 2 inches wide. Anybody know the beast?

 

[Brazilian Reefer]

Never seen before. Following here to discover.

 

[DJF]

Looks like a trochus to me; they have one bigger than a stepstool at my local aquarium

 

[TokenReefer]

Yes. Larry!

 

[Kasrift]

Tent Snail (Tectus tentorium). Taller than typical trochus.