Does anyone know if they make a heavy duty tube with Presta Valve Removable Valve Core?

Removable stem?
Schräder valves usually have removable valve cores. As do some Prestas. And all Dunlop. I’ve seen valve EXTENDERS to Prestas. But never any removable valve stems.

I should have said Presta Valve Removable Valve Core, so I can put extenders on

I use specialized tubes and have been really good to me. They have removable valve core.

Are they heavy duty or just good, and Fight On!

I would say yes. They very thick tubes compared to the Forte tubes I used to buy.

Fight On!

Great! Thanks I'll check them out. Where did you buy them? Are you in so cal? I'm in Orange

I purchased them from Backcountry.com. I had a hard time finding tubes at LBS back in October why I purchased them online.

I’m in Lakewood