ZIP WHEEL is the highest performing cut-off wheel on the market. Faster, cooler, freer cutting and heavily reinforced for added safety, ZIP WHEEL provides premium performance while resisting twisting and bending. This allows for a true, straight cut every time. The end result is a wheel that improves worker safety while delivering the lowest cost-per-cut in the industry. Provides significantly more cuts than the competition according to comparative test measurements performed in a lab environment. For use on cast iron, sheet metal, stainless steel, and steel. Package of 25. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.