This heavy-duty high-lift lawn mower blade is designed for AYP, Craftsman and Husqvarna riding lawn mowers with 42-inch decks, OEM part number 138971 (compatible with 532138971 / 127843 / 138498). Constructed from durable steel with a corrosion-resistant black coating, it features a 5-point star center hole for a secure fit. The high-lift design delivers powerful airflow, significantly improving side discharge and bagging performance, even when cutting tall, thick or damp grass. It’s ideal for maintaining large residential lawns.