SUNBELT BLADE-MOWER, PRED, 21-5/8", 51/64",MULCH - B1PD1068 Predator blades offer superior mulching capabilities over traditional mulching blades. The airflow tooth design increases blade strength while producing more airflow for smaller clippings. Predator blades have all the same benefits as XHT (Xtreme Hardness & Toughness) blades. (3) blades for 62" cut C deck. Center Hole: 51/64" Length: 21-5/8" Thickness: .197 Type: Toothed Width: 2-1/2" Crossed From: John Deere :M143504, M145119, M145719. SHOUP: M96771 OREGON: 90-309, 90309, 91-471, 91471, 96-771 ,96771 Fits the following John Deere Models with 62" Deck :X465, X475, X485, X495, X575, X585, X595, X700, X720, X724, X728, X729, X740, X744, X748, X749, Z465, 2320, 2520. This is an Aftermarket part. Thanks for looking!