2 of Chipper Blade Kit 781-0490 981-0490 For Craftsman/Troy-Bilt/MTD Shredder Part numbers: 981-0490 781-0490 Blade Dimensions: Length: 3-3/8" Width: 1-1/4" Thickness: 1/4" Bolt spacing on center: 1-7/8" With Fasteners Dimensions: 710-1054 Screws 5/16"X24"X1" Includes 2 736-0119 Lock Washer 5/16" Includes 2 912-0411 Lock Nut 5/16" Includes 2 Chipper Blade fasteners for part 981-0490, 781-0490, 942-0544 & 742-0544 as well as several other applications on MTD equipment.