6” x .045” x 7/8” Depressed Center Cut-Off Wheels by Black Hawk Abrasives are ideal for large metal cutting jobs especially on stainless steel, cast iron, steel or sheet metal. Due to the 6" x 3/64" x 7/8" cutting wheels design these 6 inch cutting discs cut fast with minimal material loss, maximum precision, yet the last cut after cut. Each 6” slicer disc is made up of double reinforced, high tensile strength, fiberglass meshing covered by bonded, premium, heat treated, aluminum oxide grains. The fiberglass mesh will protect from any shattering and provide additional side to side strength. The AO grains cut quickly and last long. The T27 depressed center offers an added rigidity which should reduce vibration during use. The 6” cutoff wheel is meant to be used on a 6 inch angle grinder with a guard suitable for a T27 6” cutting disc and is perfect for pipe cutting, cutting rebar, jobs with auto body metals, marine sheet metal, steel tubing, rusted bolts and exhaust pipes.