Designed for precision and efficiency, the maroon aluminum oxide surface preparation wheel is an essential tool for professionals working with a variety of metals. Measuring 4-1/2 inches in diameter and featuring a fine grit, this T-27 shaped wheel is perfect for achieving a smooth finish on ferrous and non-ferrous metals alike, including stainless steel and copper. With a maximum RPM of 13,300, it is built to handle demanding tasks while ensuring ease of use. Each box contains ten wheels, making it a convenient choice for those looking to enhance their metalworking processes.