Set of 2 Blades, Quality Gator “Fusion G5″ Blades – Oregon part #598-629 Replaces MTD blades: 742-0616, 942-0616, 742-04126 942-04312 21-3/16″ Long, 3″ Wide, .164” Thick, Mounting hole to fit 6 point mounting hole on MTD, Cub Cadet, etc. Fusion Blades have Tungsten Carbide “fused” to the edge (see photo) for longer life Please check to make sure the blades you are replacing have a 6 pt. star mounting hole – if they do not, these blades will NOT fit.