MaxPower’s 561558B includes 3 blades for many 50 in. cut MTD and Cub Cadet Lawn Tractor and RZT mowers 2015 and after. These blades replaces OEM #s 942-05052A and 742-05052A. Each blade in this set measures 17.25 in. L and 2.5 in. W with a 6 point star center hole. Check your owners manual to verify that the OEM number of the blade being replaced matches one of the OEM numbers provided for this item. Maxpower blades are manufactured to meet or exceed OEM specifications. Proudly made in the USA.