Easy to assemble and disassemble: connect multiple nylon rods to extend reach. The rods are flexible and can pass through sturdy pipe bends without issue. Nylon brush head for durability: brush head is made of nylon material with temperature resistance and antiaging properties, making sweeping more efficient. Note: it will scratch the internal surface of the chimney stack. The electric drill is not included in the package. Complete set and practical dimensions: includes 6/9/12/15/18 nylon rods, 1 brush head, and a hexagonal rod. Poles are available in 41 cm and 61 cm lengths, and are easy to assemble or disassemble. Compared to conventional cleaning, power cleaning can remove more dirt and is gentler on smoke cabinets and stainless steel liners. Dryer vent safety and performance: use this brush to clean dangerous lint, dust and other pellets accumulated in the dryer hose and vent, which can improve the dryer's working performance and help prevent overheating and fire risk. Use scenarios and applications: Chimney and stove cleaning: extend reach by adding rods to clean sections and pass through bends, effectively sweeping the interior of the chimney stack. Home ventilation and duct maintenance: reach tight corners in exhaust ducts while protecting surfaces from excessive wear. Dryer vent maintenance: remove lint and debris from dryer hoses and vents to improve efficiency and reduce fire hazards.