Husqvarna 581851501 Blade Adapter Genuine OEM AYP Part American Yard Products manufactures parts and equipment for leading brands in the industry. Those include Craftsman, Husqvarna, Poulan Pro, Poulan, Weed eater, Roper, Sears, Rally, EHP (Electrolux Home Products) and Yard Pro Replaces: 581098501 Fits: Husqvarna HU800AWD, HU775H, HD775HW; Craftsman 917370922, 917370923, 917370924, 917370925, 917370933, 917370934, 917370935, 917370936, 917370937