Improve right angle grinder applications with this NorZon Plus SGZ CA Type 27 foundry grinding wheel. This type 27 foundry wheel features a combination of patented Norton SG ceramic and zirconia alumina grain that offers up to 10 times the performance of aluminum oxide wheels, and a 50 to 200-percent better cut rate than competitive zirconia wheels. The 1/4 inch thick wheel is designed for foundry use, including working with slag, cleaning parting lines and other tasks that require aggressive grinding. Use the durable wheel on cast iron, gray iron and 400 series stainless steel.