Dear HP Group

I'm starting a new restoration project and am need of any knowledge around the type of coax used on the test leads.? I've seen many videos (Curious Marc's was an excellent one), scoured the repair manual and read many posts here and elsewhere where they've been replaced, but find the type of coax that was used not mentioned.? As typical, mine are in need of replacing.??
Rough measurements show an outer diameter of around .125"/3.1mm.? The closest diameter to this i'm able to find is RG174 at 0.110"/2.79mm which would probably work, but may be quite loose fitting in the strain relief jackets they go through.? I'm also assuming a 50ohm coax would be needed.

Any insight would be appreciated.

-Adam