Mulching Blade / Cub Cadet 759-3830Pack Size:1Cub Cadet 759-3830, Cub Cadet 742-3033Dealer Choice 50-3186, Laser 91716, Lowe's 188335, Oregon 91-058, Sunbelt B1CC1421Cub Cadet 2001 and newer models; requires 2 for 42" deckLength: 21 3/8 ", Center Hole: 3/4 ", Outer Hole: 5/16 ", Center To Center: 2 1/2 ", Width: 2 3/4 ", Requires 2 for 42" deck, Thickness: .187 "