The Norton 66252843785 Gemini XXL Grinding Wheel is engineered for efficient stock removal, weld smoothing, and beveling on various metals, including 400 series stainless steel and hard-grade carbon steel. Measuring 4-1/2 inches in diameter with a 1/4-inch thickness, this Type 27 depressed center wheel features a 5/8″-11 threaded arbor for secure attachment to compatible angle grinders. Its premium, ceramic-coated aluminum oxide abrasive ensures a rapid cut rate and extended wheel life, making it ideal for demanding grinding applications. 10 pack.