As others have mentioned, wide bore simply means the center “bore” (ie hole where the sound comes) out is very wide. Compare this to KZ Starlines or Sony Hybrids, or Olive tips, which have a very narrow bore.
Auvio tips are my favorite wide bore by far. They fit as securely as the Starlines, but are wide bore. KZ is nuts for it making these, as they are far superior to their crap Whirlwind wide bore tips:
There’s many other wide bore tips too. Here’s some which I think are originally intended for some Beats IEM (power beats maybe):
Here’s some random/generic wide bore tips:
I even have some wide bore double flange tips, which is nice because most double and triple flange tips have a very narrow bore.
How could you always be so detailed? U crazy man ahahahah
Anyway, are they compatible with every kind of headphone or the connection to the nozzle is even large and could maybe not fit? I mean, they can be mounted on every kind of headphone or the headphone has to have a bigger nozzle end(in terms of diameter)?
Gonna pickup a KZ ZSA i think in these days, i love foam tips as i have driver flex problems with the silicone tips, but i can maybe try again buying new tips.