Pearl Abrasive PX4CW04 Xtreme PX-4000 Diamond Blade for Cutting Metal, Red, 4-Inch A revolutionary line of diamond wheels for cutingt metal, stainless steel, and a variety of ferrous metals Maintains blade diameter for consistent cutting depth and fewer blade changes, minimizing downtime Less Dust and debris than conventional abrasives Vacuum Brazed Technology for extra long life Ultra thin kerf that cuts extremely fast