Weiler Knot Wire Bevel Wheel, 4 in D x 3/8 in W, .014 in Steel Wire, 12,500 rpm (804-13406) EachMaximum aggression for cleaning in corners Bristle Wire Material = Steel Diameter = 4 in Bristle Wire Size = 0. 0140 in Arbor Arbor Thread TPI or Pitch = 5 8 in 11 UNC No. of Knots = 20 Face Width = 3 8 in Face Plate Trim Length = 3 4 in Stem Speed = 12500 rpm [Max] Applications = Remove large burrs and heavy contamination Applicable Materials = Rust, Paint, Oxides, Scale Type = Arbor Hole Brush Used With = Right Angled Grinders