tioncy 12 pack wire wheel for angle grinder, for 4-1/2" angle grinder with 5/8"-11 arbor, heavy duty carbon brushes for rust removal heavy cleaning polishing(red,knotted wire cup brush) red knotted wire cup brush is up for auction in Tools & Home Improvement. The current bid is $2.00, 93% below the $29.99 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.