Abrasive Cut-Off Wheel, Abrasive Material Zirconia Alumina, Grit 36, Connector Size 7/8 in, Connector Type Unthreaded Hole, Overall Diameter 4 1/2 in, Overall Thickness 0.045 in, Compatible Tool Type Angle Grinder, Circular Saw, Primary Material Application Stainless Steel, Steel, Series Z-Tech, Wheel Type Type 1, Maximum Operating Speed 13,300 RPM, Reinforced Status Reinforced, Bond Type Resin The SAIT(TM) Type 1 heavy-duty cut-off wheel contains zirconium aluminum oxide abrasive. For aggressive material removal of ferrous metal and stainless steel.