Blade replaces Cub Cadet 477589-R3, 477598-R3, 490471-R1, 759-3844, 759-3848. 15-6075. For Cub Cadet 1968 to 1973 models. Refer to your manual to check your OEM number to be sure of the correct part. All blades sold individually. Order (2) CC11 & (1) CC22 for 42" cut.