Mercer Industries 187010 Crimped Wire Wheel, 4" x 1/2" x 5/8"-11, For Angle Grinders Provides excellent abrasion and wear resistance, along with high flexing action Superior rotational balance reduces operator fatigue and improves tool life Solid ring construction ensures industrial wire wheels to run smoother, longer with less vibration Industrial wire brushes are made from high quality steel .014 Carbon Steel