Keyed Option for this Handle Set?

A handy person from ILL says:
January 27, 2020
Looking fir a lock and key cylinder but do not know which cylinder to purchase
I have attached 2 pictures
Thumbnail of the uploaded file named F5D17319-0E6B-4126-9BCC-090CFA357D56.jpeg
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Bob from SWISCO responded:
January 28, 2020

Thanks for writing in. See our 82-310 Key Lock. There's a punchout hole on your outside pull that you can remove to install the key lock. See what you think.
Key Lock
Key Lock
82-310
$14.30
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