When removing a pedestal sink to put tile underneath, I busted one of the supply lines. I know I can get a flexible mesh supply line at the store, but I don't see any threaded connection on my wall side. Is this a normal way of installing supply lines? What's the best way to proceed from here? Also, what are the pros and cons of the new mesh style vs the ribbed style I have now?
The broken supply line appears to be integral to the shutoff valve. You will need to replace the valve with something like this
You may wish to consider replacing both of them and installing new flexible supply lines.