Husqvarna 510417901 Blade 21", Pack of 3 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 Fits Various Husqvarna Models Including: MZT 61, MZT 61 BF (967177009), MZ 6128 (966613103), MZ 6128 BF (966663702), MZ 28ZTBF (966663701), PZT 60 (966613502), MZT 61 BF (967177010) Length: 21" Pack of 3