Counteract balancing beads
The Counteract or Counterbalance Beads will automatically balance the complete wheel assembly.Simply open the outside package, and toss the inner bag into the tire. This method allows the use of an air blaster to seat the tire on the rim, without contaminating the seating area. The air blaster pressure inside the tire will collapse the bag containing the Beads or it will break soon after installation.
Source: counteractbalancing.comAdded: 15 June 2006