Rutland Products 10624 1/4-Inch by 4-Foot Fiberglass Extension Rod
These rods are designed for the homeowner in mind and use 1/4" threading to connect to your brushes. Constructed of 0.35" diameter fiberglass and available in lengths of 4', 6' and an 18' set of six 3' rods. The longer the length of the individual rod, the more flexibility the rod has. Use with chimney sweep or round poly chimney brushes.