Maxpower's 3-blade mulching set for many 50 in. cut MTD, Cub Cadet, Troy Bilt mowers replaces OEM 942-0623. Each blade measures 17- 5/16 in. L and 2-1/2 in. W with a 6-point star center hole pattern. To ensure a proper fit, please check your owner's manual to verify the proper replacement blade number and be sure that it matches one of the OEM numbers listed in our description. Maxpower's mower blades are made from quality US steel. Our blades are manufactured to meet or exceed OEM specifications.