2002 Ford F150 BAD BREAK LINE

I need to replace the small piece of rubber hose that is in the brake line. It sits above the front axel and I can not find the parts. It is about a 3 inch peice of rubber hose inserted into a thimble looking connector and then crimped. Is there an after market retro-fit kit or do I use standard steel ine with preasure fittings or what? Any help would be great!

Thanks Greg