Experience the power of the New Jet Red Line 9" Cup Grinding Wheel with a 24 grit aluminum oxide abrasive material. This high-quality grinding wheel is designed for professionals in the metalworking industry, with a 7/8 arbor hole size and a wheel thickness of 1/4 inch. It has a maximum speed of 6,600 RPM, making it ideal for heavy-duty grinding tasks. Perfect for use on a range of materials, this cup grinding wheel is a must-have addition to your metalworking supplies.