Furnace Wire Cleaning Brush; Type Single Spiral/Single Stem; Brush Size 2 Inch Diameter x 7 Inch Length; Overall Length 27 Inch; Stem Diameter 0.19 Inch; Bristle Material Black Horsehair; Handle Material Wood; Application HVAC/Refrigeration/Boiler/Furnace/Heat Exchanger/Heater/Radiator