Hey frens, I want to sleeve my Index cable.
I saw this suggested: https://www.amazon.com/dp/B074LRSL3H?psc=1 (25ft - 1/2 inch PET Expandable Braided Sleeving)

However I want a purple one.
I found this: https://www.amazon.com/Othmro-Expandable-Sleeving-Management-Organizer/dp/B07ZRJ9S9P
But it's in mm not inches, and I'm too retarded to understand the exact equivalent to the 1/2inch one.

Can anyone who's good with measurements help?