MaxPower's 331538B includes 1 high lift blade for many 21 in. cut MTD, Cub Cadet, Troy-Bilt walk behind mowers. This blade replaces OEM # 942-0642 and measures 21 in. L and 2-1/4 in. W with a bow-tie center hole pattern. To ensure proper fit, please verify the OEM # of the blade you are replacing matches the OEM # listed in this description. MaxPower blades are proudly manufactured in the USA to meet or exceed OEM specification.