Rutland PFT-8 8 in. Diameter Round Sweepsall Nylon Brush Head With Tlc Torque Lock Connector SweepsAll 8-Inch diameter round brush head with nylon bristles. Tough acid resistant bristles are suitable for use in wood&#44; coal&#44; oil or gas flues. Made with a TLC torque lock connector. Package Quantity: 1 Excellent Quality.