ACCURATE CUTTING: The 75mm metal cutting discs have industrial quality to assure fast and accurate cutting performance. 1mm Thickness allows for faster, cleaner cuts through thicker material which creates less heat buildup on the cutting surface. PERFORMANCE: These 3” cut-off wheels can cut stainless steel or mild steel and are ideal for automotive metals, removing flash, pipe cutting, gate removal, rod cutting. Dapetz air cutting wheel are meant to be used on a die grinder (with a mandrel) and are perfect for compact areas and odd angles where larger grinders could not fit. MULTI-PURPOSE: Tough abrasive cutting discs are perfect for super-fast, clean cutting in carbon steel, stainless steel, pipe, iron, copper, and are ideal for cutting all kinds of ferrous metals. QUALITY: These metal cutting discs are made of aluminum oxide grains which is durable and safety. Also provides aggressive cutting action and longer service life SIZES: 75mm (3”) sanding discs, ultra-thin cutting disc 1mm, Bore: 9.5mm and Max Speed: 20,000RPM.