Maxpower 561736 3-Blade Mulching Set for 48 Inch Cut Poulan/Husqvarna/Craftsman Replaces 173921, 532173921 Fits Poulan/Husqvarna/Craftsman and other equipment manufactured by FHP/AYP Set includes 3 mulching blades Replaces OEM No.173921, PP24006 Proudly Made in USA