Oregon # Length Center Hole Width Thickness 98-071 21" 3/4 3" 0.2" Specifications Oregon Part Number 98-071 Cub Cadet 942-04415 21in Center Hole: 3/4 Length 21 Width: 3 Thickness: 0.203 Offset: 1/2 Replacement Blades Are "made To Fit" - Not An Oem Part...