* , high quality *Material: PP, PA (rods), nylon, iron *Rod color: white or yellow (random) *Length of pole (1 piece): 400mm *Brush head sizes: 100mm, 150mm, 200mm *Extendable length: 6-piece rod set: 2.3m / 7.6 feet 9-piece rod set: 3.5m / 11.5 feet 15-piece rod set: 5.8m / 19 feet 18-piece rod set: 7m / 23 feet *Safety: Regular cleaning of lint and debris from pipelines helps improve airflow and reduces fire risks associated with dryers. Cleaning chimney deposits also helps prevent blockages that could lead to poor ventilation and potential carbon monoxide buildup. *Save money: This reusable tool allows for frequent cleaning, helping reduce the need for professional services over time. *Multi-function: Suitable for cleaning fireplace pipes, chimney pipes, and dryer vents. Not recommended for flexible foil ducts, as they may be damaged during use. *Simple to use: Attach to a cordless electric drill. Rotate the rod clockwise and move it back and forth slowly to clean the pipe effectively. *Pole length selection guide: Available pole lengths: 400mm, 410mm, 570mm, 600mm Shorter poles offer greater stiffness. Hardness ranking: 400mm PA rod > 570mm PA rod > 410mm PP rod > 600mm PP rod Quality ranking: 400mm PA rod = 570mm PA rod > 410mm PP rod = 600mm PP rod Recommended: 400mm PA rod and 570mm PA rod for optimal performance *Resilience comparison: High resilience rods are made from superior materials, offering better recovery after bending and higher durability under stress. Ideal for complex installations with multiple bends (e.g., more than 3 elbows). Standard rods are suitable for simple, straight ducts and light-duty use. *Special notes: Newly manufactured PA rods may feel stiff. Exposure to air for approximately one month allows them to absorb moisture and become softer and more flexible. Do not store in sealed containers—keep in open air for natural conditioning. Avoid applying water directly, as this may affect rust protection on metal components. The actual pole length ranges between 400mm and 415mm. *How to use: 1. Connect the required number of rods. 2. Attach the brush head to the rod. If using a power drill, connect the hex adapter. 3. Begin slowly, cleaning 2–3 feet at a time. Pull the brush back toward you to remove debris. Pushing debris forward vertically is ineffective; horizontal cleaning may work in some cases. 4. Have an assistant operate the drill while you guide the rod into the duct. Move the brush in and out gradually, advancing deeper after each pass. After cleaning about 3 feet, retract fully to remove accumulated debris. 5. Wear a mask—dust will be present, and odors such as fabric softener may be released. 6. Always rotate the brush/rod assembly clockwise only. Reversing rotation may cause detachment inside the duct. 7. Never force the brush or rod through the duct. If resistance occurs, pull back slightly (while still rotating clockwise), then proceed slowly forward. 8. Avoid bending the rod connected to the electric drill. If bending is necessary, do not exceed 30 degrees and operate at very low speed to prevent damage. 9. Use only the number of rods needed for your task. Excess rods can twist and cause mechanical strain or damage.