Some "accessory" bits are pretty much interchangeable between different probes.
For instance, the "witches hat" bit with the grasping hook on the end which commonly comes as part of a completed probe will usually fit from an "ElCheapo", to a Tektronix probe & vice versa.
There are a few of them which are a bit loose, though, (probably just manufacturing tolerances).
All the cheap probes I have seem to be modelled after the smaller Tektronix style, with a fixed "sharp" tip which is not replaceable.
When the "witches hat" is fitted, this pin mates with a springy socket to make a secure connection to the hook.
I have some "frankenprobes" made up from parts of discarded Tek probes, as well as some cruddy cheap switchable 1x/10x.(I normally leave them on 10x, as it is easy to break the switch.)
One of the latter came as original equipment with the little "Digitech" & the other is an "after market" one from Jaycar.
I also have a couple of big old retro-style Tektronix probes, which I keep for measurements on high voltages, as their ratings are better for this, but not so good for everything else.