Schaefer Brush 3-3/4" Spring Grade Tempered Wire Brush for 4" Flue (Total Length: 7-1/2")

3-3/4" Spring Grade Tempered Wire Brush for 4" Flue (Total Length: 7-1/2") For cleaning flues and boiler tubes, condensers and heat exchangers, boilers, furnaces, heaters, radiators, refrigerators and all types of tubes, holes and openings.