6 metal drill wheels of different diameters: includes 1 piece of 75 mm, 1 piece of 50 mm, 1 piece of 63 mm, 2 pieces of 40 mm brushes and 1 piece of 50 mm wire brush. The larger size is suitable for large areas of fast work, and the smaller size allows for tight spaces and fine work. Avoid Breakage and Deformation: The drill brush wire uses 0.012 inch carbon steel crimped wire and excellent fixation, the wire will not be lost and bent during intense use. Suitable for a Variety of Surfaces: The wire brush set removes rust, paint, dust and burrs from surfaces such as metals and wood, and can also be used to level weld spatter. Rough Treatment for Surface: The wire grinding brush for drill can be used for surface adhesion treatment before painting, spray coating and electroplating. It can also be used for peeling and grinding surface paint. Can withstand high labor intensity: The rotating wire wheel can withstand the high speed of 4500 RMP and the sturdy 6.35mm chuck to avoid the risk of