Parameter Standard Mpa en12413 Diameter: 4-1/2 inch (115 mm) Thickness: 3/64 Inch (1.2 mm) Arbor: 7/8 inch (22.2 mm) Maximum Speed: 13,300 RPM Reliable Professional Cutting Wheel angle grinder multipurpose disc Panlen cutting wheels are made of alumina particles, durable, smooth and durable, fast cutting speed, high cleanliness, wear speed is much slower than ordinary grinding wheel. The efficient double-reinforced cut-off wheel enables you to cut quickly, precisely and precisely. Click on the top panlen store link or style under the title, 3" 3/8 arbor new product available. Universal size, suitable for all kinds of angle grinder. Extra-thin technology, ensure the accuracy and reduce the workload. Versatile Applications, carbon steel, pipe, cast iron, coppe, aluminum.