Sofirn 18350 Tubes?

I can’t seem to find anywhere that has them for sale. I’m looking for one for my SC31 Pro. Does anybody know where I can buy one, or have a spare one they’re willing to sell to me?

https://www.aliexpress.com/item/1005001291533127.html

That one fits.

Ahh, I kept searching with the word “Sofirn” and it wasn’t showing up. Thank you kindly!

No probs!