Product Description Equipped with knotted wire for heavy material removal, DEWALT Bench Grinder Brushes are crafted from highly specified wire grades with an internal holding plate to ensure consistency and safety. Balanced construction delivers smooth performance. Crimped wire provides flexibility. Amazon.com Add function to your DEWALT 8-inch bench grinder with the DEWALT DW4906 crimped wire brush. The brush is crafted with maximum reliability in mind. Strict specifications are applied to the design and designed to ensure they maintain a competitive higher than standard wire count. Best used for moderate jobs, including deburring, smoothing a weld, dislodging rust, and prepping a surface. The DW4906 is most compatible with 5/8-inch arbor and functions at 4,000rpm.