Double Up For More Power! This is the offset fine tooth combination, mounting the larger Lancelot first with Squire on top fastened with the Universal nut. When holding the grinder with the blades at between 25 to 30 degrees to the material, you have 40 teeth sweeping or raking material away sideways or in downward strokes. Also removes material in slice, plunge and straight cuts but leaves a step or bench shape with each pass. Best used for convex shaping e.g. removing the sides of a bowl, leaving a fine finish. Also great used individually for detail work.