Features: These wire wheels for 4 1/2 angle grinder have a wide range of applications that span across light to heavy duty tasks. They can be effectively applied on metal, wood, and various other materials to reduce rust, paint, spatter, slag, and scale. Moreover, the brushes can also be applied to clean up the edges of welds and rid them of any rough edges. With an emphasis on safety and performance, the wire wheels for grinders have their inner and outer fixing plates double pressed with reinforced steel. The wire on the cup brush ingrains strength and safety, while the thickened nut with its regular threads connects securely with the angle grinder. These features help prevent wire breakage during demanding tasks. Specifications: Material: carbon steel wire Color: red Size: 3 inches, 4 inches Package includes: 4 Pcs 3 inch knotted wire cup brushes 4 Pcs 4 inch knotted wire wheel brushes 2 Pcs 3 inch crimped wire cup brushes 2 Pcs 4 inch crimped wire wheel brushes Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.