Set of two (2) replacement HEAVY DUTY Cub Cadet and MTD blades. Replaces MTD and Cub Cadet codes 942-04308, 742-04308, 942-04312, 742-04312, 942-04312A heavy duty. Fits 42" Cub Cadet and MTD Mowers with 6 Point Star Mounting Hole. Blade measures 21-3/16 - 17/64" overall length, 2-1/4" wide, 0.187" thick and has the 6 point mounting hole Blade specifications as follows: Overall Length: 21-316" Width: 2-1/4" Thickness: 0.187" Mounting Hole: 6 Point Star Heavy Duty Blade Fits: CUB CADET: RZT42, 2 for 42" MTD: 13AJ775S000, 13AN772S000, 13AX771S004, 13AX771S004, 13AX795S004, 17AFSACS004 TROY BILT: 13AN77KS011, 13AX78KS011, 13AX78KS066, 13WN77KS011, 13WX78KS011, 13WX78KS211, 17BDCACK066 YARDMAN: 13AN795S001, 13AO772S055