What size Oetiker clamp for 5/16 ID gas line with 1/4 barb

[htims05]

Just as the subject states - what size clamp should be used for 5/16 gas line on a 1/4 barb?

 

[camonick]

Maybe this...
https://www.kegconnection.com/oetik...st-used-oetiker-clamps-for-beer-applications/

Edit: I see their description says 5/16” barb, sorry.