The Faithfull Boiler and Flue Brush Set is ideal for cleaning flues and boilers where access is restricted. Each brush features an 80mm long spiral of nylon bristles attached to a strong, flexible, twisted wire loop handle measuring 500mm. This set contains: 1 x Round Brush Ø16mm1 x Round Brush Ø50mm1 x Flat Brush 50 x 20mmAdditional Information:• Consumable Type: Flue Brush