There are good quality, replacement test leads available. Here's one source.
https://probemaster.com/8000-series-test-leads-only/
They are good except for two things... they have protective shrouds and cannot be piggybacked. A pain in the arse. Pomona, Fluke and HCK leads have those blasted shrouds on them. On some older equipment, the shrouds get in the way so you cannot plug them in. And I cannot piggyback leads. When I get around to it, I will 3D print an adapter to allow paralleling of leads and let shrouded leads to connect to old equipment.
Curmudgeony much?

When have you
ever seen multimeter probes come with stackable banana plugs? I’d think that’d make it impossible to meet CAT ratings, which most probes seem to endeavor to meet. (The entire measurement setup’s CAT rating is that of the lowest rating of any component used.) That’s why safety (shrouded) banana plugs are standard these days, and safety is a good thing, ya know? And it’s not like that is something new, they’ve been standard for, like, 25 or 30 years now… As for what’s on the market today, only cheap garbage meters have safety banana jacks that don’t accept basically any shrouded banana plug on the market. (Well, and the 8.5 digit metrology multimeters that have banana binding posts, but they’re not claiming to be CAT rated.)
As for Probe Master: they give you the choice of five different types of male banana plugs: safety and unshrouded, each in right angle or straight; or straight with retractable shrouds (plus a few female banana options, and pin plugs), on a bunch of different lead lengths (custom lengths by request). If you order a version incompatible with your meter, that’s entirely your fault, not theirs.
Why 3D print some nonsense when you can easily buy adapters to do what you want? I have a couple of safety-jack-to-unshrouded-plug adapters for the odd occasion when I want to use probes with a power supply, for example. You can get both temporary ones, or semi-permanent adapters that you push in and then turn an internal set screw to expand the plug so that it tightly locks into the non-safety banana jack or binding post.