The Oregon 98938 is a high-quality lawn mower blade designed for a 21-inch cutting width. This durable blade features a 6-point star center hole, ensuring a secure fit on compatible mower decks. It serves as a direct replacement for several MTD OEM part numbers, including 742-0610, 742-0610A, 942-0610, and 942-0610A. The blade is suitable for various MTD group brands such as Cub Cadet, Troy-Bilt, and Craftsman, and is often used in pairs for 42-inch cutting decks.