Shredder/Chipper Blade Kit Replaces Craftsman/Troy-Bilt/MTD 781-0490 & 742-0571 | eBay
GreatCircleUSA Wood Chipper/Shredder Replacement Blades - For our 3-in | GCM Tools | Outdoor Power Equipment
Amazon.com : Landworks Mini Wood Chipper Shredder Mulcher Industrial Replacement Blade/Knives Set (Qty 2) for Both LCE12 SuperHandy and GUO054 Model Wood Chippers : Patio, Lawn & Garden