Set of 4, Longer Life Gator Fusion G5 3-In-1 Mulching Blades to Replace MTD Blades 742-0616, 942-0616, 742-04126 942-04312 Used on 42" Decks, MTD, Cub Cadet, White, Wards, Yard Man, Troy Bilt. Set of 4 Blades, Quality Gator "Fusion G5" Blades Replaces Cub Cadet MTD: 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 Extended cutting length, blade is sharpened longer up the blade