Cooks Standard02567 Pot Rack Solid Cast Swivel Hooks, Aluminum, Silver

What is the width of the hook part of this?

How wide is the hook base? I have 1/2" slot rack with a 3/4" insertion point

Are there hooks the same dimension as the ones from taylor ng ? will they fit ?

How do i find these hooks that do not turn: cooks standard 02567 pot rack solid cast swivel hooks, set of 4, silver