*, high quality, shipped within 48 hours *Material: PP, PA (rods), nylon, iron *Rod color: white or yellow (randomly shipped) *Length of pole (1 piece): 400mm; actual length 400415mm *Brush head sizes: 100mm, 150mm, 200mm *Extendable length: 6-piece rod set: 2.3m / 7.6ft 9-piece rod set: 3.5m / 11.5ft 15-piece rod set: 5.8m / 19ft 18-piece rod set: 7m / 23ft *Safe cleaning: Regular removal of lint and debris from dryer vents helps maintain airflow and may reduce fire risk. Cleaning chimney or vent pipes can help prevent blockages that may lead to poor ventilation. *Cost effective: One-time purchase allows repeated use for ongoing maintenance, helping avoid frequent service costs. *Multi-purpose use: Suitable for cleaning fireplace flues, chimney liners, dryer ducts, and rigid pipe systems. Not recommended for flexible foil ducts, as they may be damaged during use. *Easy to use: Connect to a cordless electric drill. Attach the brush head and hex adapter if needed. Rotate clockwise slowly while gently pushing and pulling through the pipe for effective cleaning. *Pole selection guide: Available lengths: 400mm, 410mm, 570mm, 600mm Shorter poles offer greater stiffness. Hardness ranking: 400mm PA > 570mm PA > 410mm PP > 600mm PP Quality ranking: 400mm PA = 570mm PA > 410mm PP = 600mm PP Recommended: 400mm PA rod and 570mm PA rod for best performance *Enhanced resilience vs. standard rods: High-resilience rods: Made from superior materials with better flexibility and durability. Recovers well after bending. Ideal for pipes with multiple bends (e.g., more than 3 elbows). Standard rods: Best for simple, straight ducts. May break under high stress or complex conditions. *Important notes: New PA rods may feel stiff upon arrival. Exposure to air for up to one month allows moisture absorption, resulting in increased softness and elasticity. Do not store sealedallow air exposure for natural conditioning. Do not soak in water, as this may affect rust protection on connectors. Rods are made of PA material and offer reliable performance. Initial firmness is normal. Color varies between white and yellowshipment is random. *Instructions for use: 1. Connect the required number of rods. 2. Attach the appropriate brush head (use hex adapter if connecting to a power drill). 3. Begin slowly, cleaning 23 feet at a time. Pull the brush back toward you to remove debris. Avoid pushing debris further into vertical ducts. Horizontal cleaning may allow forward pushing. 4. Have an assistant operate the drill while you guide the rod. Move in and out gradually, retrieving debris frequently. After cleaning about 3 feet, fully retract to remove buildup. 5. Wear a maskdust and odors (such as fabric softener residue) may be present during cleaning. 6. Always rotate in a clockwise direction only. Reversing may cause disconnection inside the duct. *Warnings: - Never force the brush/rod assembly through the duct. - If resistance occurs, pull back slightly (while maintaining clockwise rotation), then advance slowly. - Avoid bending the rod connected to the drill. If necessary, limit bend to 30 degrees and operate at very low speed to prevent damage. - Remove any unnecessary extension rods when full length is not required. Excess rods may twist and cause damage.