Disclaimer: I’m not a plumber.
What about something like this ?
Also have you tried liquid wrench or another penetrating oil?
I just found this extractor after reading u/RichTheRuler_'s suggestion of the Tub Twista. Ordered it tonight and I hope it will do the job.
Being in Canada means fewer options to choose from.
Aight, I think this is it tub drain remover
Are you able to use a saw and cut the top section off since you're replacing it anyway? You'll need to find a way to get to the actual drain and then you'd use either needle nose pliers to twist the cross piece or when that inevitably breaks you'll get something like this for your toolbox https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA
Same thing happened to me with the cross member breaking. Not sure mine was as stuck as your but this worked well for me. Maybe use it with a breaker bar?
First try using a drain removal took like this one: https://www.homedepot.com/p/Husky-Double-Ended-Tub-Drain-Wrench-16PL0128/304217585
Or one like this: https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA
If that does not work, use a saw to cut groves on the inside corner of the drain just deep enough to get a chisel in so you can tap the chisel with a hammer and rotate the drain like a giant screw.
You need this. Menards and Home Depot sell them too.
Superior Tool 05255 1.5" Tub Drain Extractor-Removes One and a Half Inch Old or Stubborn Tub Drains https://www.amazon.com/dp/B00C0M7DVA/ref=cm_sw_r_cp_api_glt_fabc_REYJQS0J03AYVV1XZV5P
This'll do er - https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA
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You'll need one of these bad boys, some plumbers putty, and a new drain.
Even with that tool it can be a pain to remove the old drain though.
I've had this problem before, and the tools I've link below is what's going to get you out of this trouble and if you use a plumber he'll probably use the same type of tools to free up the clog in your tub.
Depending on your situation I would recommend you look at some YouTube videos to get an idea how to unclog your drain.
https://www.youtube.com/watch?v=JWZklniOo\_4
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https://www.amazon.com/gp/product/B00C0M7DVA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
https://www.homedepot.com/p/Husky-Double-Ended-Tub-Drain-Wrench-16PL0128/304217585
You might want to look for one that is similar to this one. This one is not the one you need but I want to show you the style. One with many flutes
https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA
This is what I ended up going with. https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA/ worked perfectly.
I ended up buying something like this at Lowe's: https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA/
Worked great.
https://www.amazon.com/Superior-05255-Extractor-Removes-Stubborn-Drains/dp/B00C0M7DVA
Hammer it in and crank that drain out