DeWalt Masonry Cutting Wheel 4-1/2 in. Dia *Product Type: Masonry Cutting Wheel *Diameter: 4-1/2 in. *Thickness: .045 in. thick *Arbor Size: 7/8 in. *Abrasive Material: Aluminum Oxide *Grit: C60T *Packaging Type: Bulk *Compatibility: AngleGrinders *Maximum Speed: 13300 rpm *Type 1 thin wheel design for fast burr free cutting *Softer aluminum oxide Formulation provides faster cutting *2 full sheets of fiberglass for durability and safety *Discovery CON, NBR, SUP