Why spend so much to buy 2 cleaning kits for your chimney and dryer duct? They need brushes in different diameters, but can share all the long rods! With our cleaning kit, you can easily remove dangerous lint build-up in the dryer vent, also sweep away soot in the chimney. Note: This brush is poly and soft, great for dryer vent, but only rough cleaning for chimney. To thoroughly clean a chimney with stubborn sediments, just search B07RQMF277. The kit comes with 2 brush heads, the one 4” in diameter usually used for dryer vent, and the one 6” for chimney. 9 pieces of 2-feet rods, extends up to 18 feet. The flexible reinforced nylon rods are extremely durable, flexible and will bend with ease. They allow for up to 90 degree turns. To use with tight angles, attach the un-threaded part of the rod directly to a drill just like a regular drill bit. Add extension rods as needed and secure them with duct tape for extra protection. Keep the brush spinning at a low speed and use steady, easy pressure to work the brush around the bends. Package Includes: 9 * 2-feet rods, 1 * 4" brush head, 1 * 6" brush head