Rotary 10636 Blade, Pack of 3 Replaces: Cub Cadet - 759-3939; MTD - 742-3036, 759-3939; Troy- Bilt - 742-3036, 759-3939 Fits Models: Cub Cadet - GT2186, GT2544, Z Force, 208, 209, 2518, 3 for 44" Takes (3) Blades for 44" Cut; Used on Mowers 2001-Present Center - Center: 2 1/2"; Thickness: 0.2040"; Length: 16"; Width: 2 1/2"; Center Hole Diameter: 3/4"; Diameter of Outside Holes: 5/16"