Aurand's M and K tools, with their whirling steel blades, shape up any surface prior to recoating or repainting. The M tool is slightly heavier, and more aggressive than the K tool, and is typically used on horizontal surfaces. Adjustable depth settings protect the underlying surface, and prevent overloading, stalling and excessive cutter wear. Both are available in many widths, and in pneumatic or electric models. A dust collector is also available for each model.