The Dually line of cleaning brushes is the choice for the most demanding inter-pass welding applications such as pipeline construction, boiler and pressure vessel fabrication, and shipbuilding.Welders' assistants on the pipeline were among the first to realize the value in periodically switching the mounting position of a wheel in order to maintain cleaning speed and effectiveness. The Dually utilizes a but design that features a hex on each side of the wheel which is high enough to insure adequate tool clearance in either mounting position. Now all users can realize the benefits of the "Flip" without compromising safety by removing the guard from their grinder. The Dually offers maximum cleaning action, long life and safer use.