Our heavier weight dryer vent and pellet vent sweeping rods in a 4' length. Some folks prefer these stiffer rods all the time but for most professionals their use is limited to longer vents where the stiffness allows the torque of the drill to be delivered to the tool without twisting up. Not for use in chimneys as the aluminum fittings wear quickly on steel chimney materials.
We call these "commercial" rods as they are stiff enough to spin whips and brushes in larger dryer vents up to 8-10" diameter. For vents larger than this move up to the new #7163 7/16" Slick rods.
Flexible to 10 degrees F. For colder climates see our 3803S, Slick Rods with enhanced cold weather performance. Made by us in the USA.