Brake Flex hose

No problem. I attached the info below on how to replace these lines.

You are also going to need to bleed the brakes when you do this so here is a guide that will help with this: Here are videos to help you make your own line or replace the brake flex hose.

https://youtu.be/sO43p4ZFUiM

and

https://youtu.be/1Prs_coIuCg

The process is the same in most cases.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.