SUNBELT Mower Blade (Set of 6)- B1JD1049 Fits the following Compact Tractor Models: 2320, 2520 Fits the following Riding Mower Models: X465, X475, X485, X495, X575, X585, X595, X700, X720, X724, X728, X729, X740, X744, X748, X749 Replacement XHT Lawnmower blade. XHT(Xtreme Hardness & Toughness) blades are 25-40% harder than standard lawnmower blades. Benefits of the HXT blade are sharper and longer lasting cutting edges. More resistance to bending. Tighter tolerances in the aftermarket vs. OEM. XHT blades also offer greater impact toughness. (3) blades for 62" cut. Fits 62C decks. Center Hole: 51/64" Length: 21-3/4" Thickness: .250 Type: High Lift Width: 2-1/2" This is an aftermarket product. Thanks for looking!