ISE Replacement Blade fits Husqvarna REPLACES HUSQVARNA 544175701, 539002478, 586198810 Fits Models HUSQVARNA: iZ4217, iZ4819, iZ4821, iZ5223, iZ6125, CD52I, CD52L, CD52PZT, IZC5221, IZC5223, LZ25C . Dimensions and Specifications DIAMETER OF OUTSIDE HOLES0.3420' WIDTH2.3620' C. H. DIA0.4880' THICKNESS0.2500' LENGTH19-1/8'