Size: 4-1/2" Diameter X .045" Thickness X 7/8" ArborFeatures A Thin 0.045" Wheel Design For Quick, Burr-Free Cuts And A Proprietary Material Mix For Extended Wheel LifeCuts All Ferrous Metals, Iron, Steel And Stainless SteelAluminum Oxide Grain Delivers Aggressive Cutting ActionConsists Of Two Sheets Of Fiberglass For Increased Durability And SafetyMaximum RPM: 13,300