Toothed Blade / AYP 180054Pack Size:1AYP 180054, AYP 173920, Husqvarna 532 18 00-54, Husqvarna 532 17 39-20J. Thomas HQ3920, Laser 91704, Laser 91705, Laser 91682, Oregon 96-615, Oregon 95-915, Oregon 95-062, Oregon 95-053, Rotary 9907, Sunbelt EP-1035, Sunbelt B1EP1035, Sunbelt B1PD1074AYP Requires 3 for 48" deck; Husqvarna Requires 3 for 48" deckLength: 16 11/16 ", Center Hole: 5 pt. star, Outer Hole: 3/8 ", Center To Center: 4 ", Width: 2 1/2 ", Not recommended for use with mulch kit, Requires 3 for 48" deck, Thickness: .203 "