Wrench Size?

[Night_train01]

I am hoping someone can tell me the size of wrench I will need to remove the brass adapter that threads into the block for the turbo drain tube. I know the swivel nut on the drain tube is 1-1/16" but I want to know the adapter size on the block.....thanks

 

[Nick Micale]

1-1/4"

 

[Night_train01]

Thanks