Rotary 10093 Blade, Pack of 3 Replaces: Simplicity/Allis CHA: 1704100, 1704100AS, 1704100SM, 1716696A, 1716696ASM, 1727774A, 1727774BMA, 1727774SM Replaces: Windsor: 50-4676 Fits Models: AYP/Roper/Sears - ZTS7500; Simplicity/Allis CHA - 1692883, 1692884, 1694957, 1694958 3 Blades needed for 44" cut Width: 2"; Length: 16 9/64"; Thickness: 0.2040"