A great deal on a set of 3 Gator mulching blades guaranteed to fit John Deere 60" mowers when equipped on John Deere models 420, 430, 445 and 455 garden tractors; 755 and 855 compacts and 261 rear grooming mowers. Just be sure your mower deck is a 60" as these models could have been equipped with different size mower decks. These Gator blades replace John Deere part numbers M141785, AM100538 and M87622. These brand new, original Gator blades made in the USA by Oregon. The blades are 20 1/2″ long, with a 7/8 round hole in the center. Thanks for looking and please check out my feedback and other auctions.