Metabo's Original Slicer cut-off wheel measures 4-1/2 inches in diameter and 0.040 inch thick, making it a fine-kerf option for cutting work. The aluminum oxide abrasive is held in a resinoid bond and reinforced with fiberglass, a combination that supports high permissible working speeds. Grain size governs how aggressive the cut is and how smooth the finish appears, while the bond's hardness, rated from A (softest) to Z (hardest), influences how long the abrasive grain lasts. Metabo also backs the wheel with a commitment to supply spare parts for at least eight years after production of any of its tools ends.