The EASYkleen Pro-M Brush is designed to cover larger areas. The MIG brush delivers high current (when soaked in solution) across a large area of the work piece. It is best for thicker gauge material, MIG welds, large profile welds and when there is a large heat-affected zone. It cleans quickly because it also holds more solution and has more consistent application of energy for cleaning. Best used at 70 degrees to work piece.