Mulching Blade / John Deere M139802Pack Size:1John Deere M139802, Scotts M139802, Scotts M145969Dealer Choice 50-4435, Green Line 159959, Laser 91695, Mow More JD9959, NHC JD6013, Oregon 91-449, Rotary 9959, Rotary 15-9959, Sunbelt B1JD6013John Deere LT160 series 42" C deck; 1742GS and 1742HS Sabre lawn tractors; requires 2 for 42" deck; Scotts S1642 and S1742 (1999-2001) series with 42" deckLength: 21 1/2 ", Center Hole: 11/16 ", Width: 2 1/2 ", Thickness: .164 "