Guide Ball is used to send rods through vent from laundry room to outside damper. Then the ball is replaced with a brush, which then can be pulled back to the laundry room while spinning. Very useful in vents with many turns where the brush would have a hard time getting through.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
