These 21-inch mulching blades are designed to fit a wide range of riding mowers and RZT mowers with a 42-inch cutting deck, spanning models from 1997 onwards. They are compatible with numerous popular brands, including Troy-Bilt, MTD, Craftsman, MTD Gold, Bolens, White Outdoor, Yard Machines, Yard Man, and Huskee.

Specifically, these blades fit Cub Cadet models such as the XT1 LT42 C, LT42 EFI, LT42 KH, and XT2 LX42 EFI, LX42 KH, and LX42 KW. They are also compatible with Cub Cadet RZT42, RZT-L42 KH, RZT-L 42, RZTS 42, RZT-SX 42 KH, and ZT-1 42KH models.

Furthermore, these mulching blades are suitable for a variety of Troy-Bilt mowers, including the Super Bronco 42 Hydro, TB42, Pony 42X, Pony 42T, Pony 42, Bronco 42 Auto, TB1942, Pony, Bronco, TB42 Hydro, TB2142, Colt XP, Mustang XP 42, Range Rider, and RZT 42.

The list of compatible models continues with Craftsman mowers such as the PYT9000, T1100, T7800, T1000, T1200, T1300, T1400, T1800, T2100, T8000, T105, T110, T130, T210, T2100, T3000, Z6000, and ZTL7000, as well as Huskee models like the LT 4200.

Additionally, these mulching blades fit White Outdoor mowers, including the LT-135, LT-2000, LT-15, LT-155, FST-16, LT-16, Lt-17, LT-165, LT-175, LT-1500, LT-1500, LT-1650, LT-1855, LT-1855H, LT-542G, LT-542H, LT-942G, ZT-42, ZT-4200, and ZTT-1850. They are also compatible with Murray mowers such as the M155-42, M15542, M175-42, M1642, MZ2142, RZT-42, MZ210-42, and M195-42.

These 21-1/10" long and 2-1/4" wide mulching blades feature a 6-point star center hole and a thickness of 0.196" (5mm). The package includes 2 replacement blades for the OEM part numbers 742-04308, 742-04308A, 942-04308A, 942-04308, 742-0656, 942-0656, 490-110-M108, 742-04312, 942-04312, and 490-110-M108.

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