Medium-Lift Blade / Toro 104-5183Pack Size:1Toro 104-5183, Toro 105-4089, Toro 105-4089-03J. Thomas BL-0035, Oregon 94-052, R & R 107-0235-03Toro Groundsmaster 3500D, 3505D, 4500D and 4700D; for 27" cutting unitsLength: 27 ", Center Hole: 1/2 ", Width: 2 1/2 ", Thickness: .250 ", Heavy-duty