These blades replace the following Cub Cadet blade numbers: 742-04053, 742-04503A, 742-04053B, 742-04053C, 942-04053, 942-04053A, 942-04053B, 942-04053C, 742-04056, 942-04056, 742-04056A, 942-04056A. Can be used as a mulcher even without the mulch plate. If used with the bagger only about 1/3 of the clippings go in the bag, the rest are mulched back in the grass and you wont see them (unless the grass is very high). Use only as matched set of 3.