Featuring highly concentrated, high-performance aluminum oxide grain for quick cuts and long life, DEWALT Type 1 Metal Cutting Chop Saw Wheels are ideal for all ferrous metal, including steel, bar stock, tubing, and studs. 2 full sheets of fiberglass deliver durability and safety. An exclusive material mix ensures long wheel life.Features Proprietary material mix ensures durable long life wheels Premium silicon carbide grain for long life and fast cutting Diamond knockout arbor for use with worm drive saws 2 full sheets of fiberglass for durability and safety Includes(1) Cutting WheelProp 65No Maximum Speed: 8700 RPM Length: 7 in Diameter: 7 in Thickness: 0.125 in Arbor Size: 0.625 in Material: Steel, Aluminum oxide, Silicon carbide Reinforcement: Fiberglass (2 sheets) Cuts Into: Stone / Masonry Blade Type: Masonry/Concrete Wet/Dry: Wet or Dry Weight: 0.300 lbs Compatibility: Fits 7" & 8" Circular Saws Country of Origin: China