This is a A-B1GH1905 BLADE-MOWER, 21", 1/2", HL PN: B1GH1905Main Description As Following : A-B1GH1905 Blade P.N: B1GH1905 (3) blades for a 61" cut. Contour blade.Center Hole: 1/2"Length: 21"Thickness: .250Type: High LiftWidth: 2-1/2" Crossed From: 10102 ROTARY , 320244 GRASSHOPPER , 50-3182 WINDSOR , 503182 WINDSOR , 91-547 OREGON , 91547 OREGON Found in Section & Models : Sunbelt - Blades > Blades, Grasshopper (UNDEFINED): SEVERAL (61") Associated Items : New Also This is An Aftermarket Product And : High Quality Afternaket Shipped from Both US and Canada