Mulching Blade / John Deere GX21786Pack Size:1John Deere GX21786Oregon 92-105, Rotary 11596John Deere 145, 155C, LA130, LA140, LA145, LA155, LA165, D140, D150, D160, X140 and X165 tractors; requires 3 for 48" deckLength: 17 ", Center Hole: 7 pt. star, Width: 2 3/4 ", Thickness: .164 "