Review on Toolman Threaded Abrasive Universal DeWalt by Patrick Nepal

Fine wire cup works well but wears out quickly. A heavy mug with knots will wobble from the start due to deformation of the mug during use. This causes a lot of vibration. I bought two sets of these and both knotted brushes did the same thing. The cups flex right at the nut that screws onto the grinder, throwing it off balance.