Is this the right one?
https://i.imgur.com/kErGmzf.jpg
Printable View
Is this the right one?
https://i.imgur.com/kErGmzf.jpg
Not a clue... but that's a beauty!
As long as the sheave is sized for 7/16 wire rope you are good to go.
You don't have a quarter for reference in the pic so it's difficult to tell how big that block is.:D