rotating brush: Heavy-duty double helix valve stem, , hard polyethylene bristles can clean coal from the metal stove pipe, chimney and chimney; at the same time, it not scratch the inner of the chimney. Reusable chimney brush: Designed for insulated chimneys, stainless steel or metal stove pipes, the manufacturer does not recommend scratching the chimney. Convenient for fire fighting cleaning: Easy to assemble and disassemble, you can connect the chimney pole to extend your range; help prevent and make the broom more efficient. High-quality brush : Our chimney brush is made of strong spiral nylon rope, strong and rotating; it not break or get stuck in the pipe during the cleaning process, effectively prevent fire and improve ventilation, help the fireplace to burn and save . Efficient cleaning effect: Our bristles have a special rectangular shape with edges and strong rotation force. The bristles can even remove the stubborn accumulation in the flue or chimney, making the broom more efficient.