Any differences? Pros and cons?

None other than whether you want the foot to slide or not. Both will slide if side swiveled, square more than round.

I like square side swiveled for a reason.

But if I were live market it would be round center swiveled.

I think you'll be happy w/ either.

And what does CS mean? Center swivel?

Thanks for the info warrior and AJE.

And I want them to be dogless Montgomery style. If not that crimp on PIT.

Pardon me, but what does crimp on PIT mean?

Enjoy your trapping season

No pan bolt to loosen or tighten. It has two legs that crimp onto the spring pin. Pan tension is a factor of the geometry of where the held down jaw meets the dog. Minor adjustments in tension can be made by bending the dog tip up or down. A pit dog also has the bump that serves as a night latch.

They are superior as there is nothing to go out of adjustment unless damaged. Same for the Montgomery pattern dogless.

What does CS mean?

Usually coilspring.

CS usually means coil spring but I don't see where that abbreviation was used in this thread?

Sorry. It wasn't. I was just asking another question because I was looking at traps online and it didn't give ID. So looked at the pan and it say #2 CS. So I asked.

Wow we have not had this debate in about a decade or so!

Bryce

So what's better, bblwi?

I like square jaws just because the way i prefer to bed traps.

Don't over think it........ just go trap some fur......

You've said it before! I am just killin' time while its dark, so I ain't over thinking it.

PIT is short for Paws-I-Trip, a play on positive trip.