Weiler's knot wheels are constructed with an internal steel plate that has equally spaced individual holes around the perimeter. Wire is inserted through each hole and twisted into a knot. Each hole has precisely the same wire count, thereby assuring perfect balance. This eliminates vibration, reduces operator fatigue and increases brush life. Stringer Bead Twist Wheels have a very narrow face and are used for hard to reach areas, primarily weld cleaning. Roughneck Patented Construction. Each knot is twisted through its own hole and locked into an individual sprocket tooth. This prevents the knots from moving and allows them to have stronger striking action on the work surface. Applications: Cleaning rust, scale and oxidation. Deburring. Weld Cleaning. Roughening Surfaces. Edge Blending. Surface Preparation. Removing rust, scale, weld spatter and oxidation. Removing rubber or plastic flash. Heavy burr removal. Heavy-duty cleaning operations. Surface conditioning. Coating Removal. Sold:1 Each