The 8G4012.0X5.2W is a Dremec part number for an aluminum oxide cutting wheel. It is designed for general-purpose applications, such as grinding and sharpening of metals and masonry. The 8G4012.0X5.2W cutting wheel comes in a 4 1/2 inch diameter with a 0.045 inch thickness. It is rated to run with a maximum speed of 8,500 RPM and is 5/8 inch in arbor size with a 7/8 inch hub diameter. It is ideal for cutting, grinding and sharpening multiple types of materials such as non-ferrous metals, stainless steel, aluminum, and masonry. The aluminum oxide material provides long lasting, high performance cutting and grinding. The 8G4012.0X5.2W is an ideal solution for a variety of general-purpose applications in metalworking, masonry and fabrication.