https://www.acehardware.com/departments/tools/welding-and-soldering-tools/welding-accessories/2327054
Forney 8-1/2 in. L X 1/2 in. W Tube Brush Nylon 1 pc Mfr# 70485 - Ace Hardware
The Forney Nylon Tube Brush with wire loop end handle is ideal for cleaning bottles, carburetors, brake cylinders, radiator hoses, engine blocks, blocked hoses...