This tube brush can clean surface of tube outside and inside

• Special designed for tube size O.D 1/2″ or O.D 3/4″
• The hole of brush can be clean outside surface of tube before expand.  The convex shape brush is cleaned inside of tube after expanding.
• Before start soldering, using tube brush clean tube inside and outside will be better.
• ABS case and iron bristles
• Watch demonstration video