36er tube with presta valve

I cannot find anyone selling in Europe a 36" tube with Presta valve for a Brauss rim. Can you link me a reseller?
I’m testing a rim so no way to tubeless it right now. When everything will be ok I’ll remove the tube, but I need it for testing

Some people use the 29" tubes on a 36" in a pinch, it may function for your purposes

The Brauss rim + Vee Monster has a tight fit, so you can sit the tire only in the inner deeper part and than inflate and expand. a 29" tube cannot sit in the inner channel, but it compress all the rim side to side. I broke 3 29" tubes… so I need a 36" tube

Best of luck in your search then!