Black Hawk 9 Inch Cut Off Wheels are the choice for serious cutting. Designed for use on an angle grinder, these discs were built for safety, speed and longevity. Each 9” cut off wheel is reinforced with extra strength fiberglass and premium aluminum oxide grains. At a thickness of .075”, this cut off wheel provides the longest life and safety while still allowing for fast cuts and minimal material removal during bigger cutting jobs. If you are looking to cut through carbon steel, stainless steel, aluminum, or various other metals the 9 inch Black Hawk Cut-Off Wheels are the best option at the best price.