MaxPower Commercial Mulching Blade for 22 in. Cut Craftsman, Husqvarna and Poulan Mowers Replaces OEM #'s 580244001 and 580244002 331749XB - The Home Depot
Craftsman Mower Blade, 22 Inch, 71 - 33015 for models start with 247XXXXX 37049946990 | eBay
CRAFTSMAN Mulching, Bagging and Side Discharging Blade - 22-in CMXGZAM100131 | RONA