4-1/2" X .045" X 7/8" SAIT A60S DT General Purpose Type 27 High Speed Cut-off Wheel 19.000 rpm, Metal Box of 50 A60S - General Purpose So unique it has a patent Type 27 Thin .045" width Special aluminum oxide grain Hard bond for extremely long life Fast, burr-free cutting Metal: Ferrous and/or non-ferrous metals (iron, steel, welds, etc.)