Specification: Main Material:Nylon Rod Length(Single):610mm / 2ft Brush Head: 4inch and 2.5 inch Color: Any kind of colorsPackage Includes: 1* Round stiffer brush for hard work, diameter 4 inch 1* Long soft brush for lint trimming work, diameter 2.5 inch 1 *Flexible Wire Shaft Brush 1*Drill chuck adaptor 1* Allen key 8 x RodsHow To Use: Step 1: Connect the rods one by one; Step 2: Attach the bristle with rods; Step 3: Put the brush into the flue; Step 4: Slide the rod into the flue; Step 5: Attached the drill with the rod; Step 6: Start cleaning the chimney. Features: *Cleaning your stove by yourself and save money. Can be used with an electric drill, with the help of large rotational force, the bristles can remove even the most stubborn build up inside the flue or chimney. *Helps prevent flue fires. Brush head made of nylon material, high-temperature resistance, anti-aging, not easy to corrode, making the sweep more efficiency. *Removing lint buildup from your dryer duct helps reduce drying time and improve dryer performance, while extending the life of your dryer. *it won‘t scratch the inner surface of the chimney flue. Easy to assemble and disassemble, and you can connect multiple rods to extend your reach.The rods are flexible which can perfectly get through those tough flue bends. *The best part is, you can reuse this kit year after year, saving hundreds of dollars on expensive cleaning services.Notes: 1.Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. 2.NOT WORKING WITH FLEXIBLE FOIL DUCT.