Herschel Parts Disc Mower Knife Blade, Center Hole Size: 0.72 in, Steel, 4.83 in L, 1-3/4 in W, 0.16 in Thick, Suitable for: Fella SM120, SM240 Disc Mower, John Deere 265, 270, 275 Disc Mower, 1320, 1326, 1327 Mower Conditioner, Kuhn GMD41, GMD44HD, GMD55S, GMD66HD, GMD77HD, GMD500S, GMD600HD, GMD700HD, GMD800HD Disc Mower, New Holland 411, 442, 452, 453, 462, 463, 465 Disc Mowers