Inner Groove Design: Our rethreading dies are precision engineered for a perfect & snug fit. Cover Most Common Sizes: Our axle spindle rethreading kit includes 8 commonly needed nuts to cover a range of axle spindles on most vehicles, including M20x1.25, M20x1.50, M22x1.00, M22x1.50, M24x1.50, M24x2.00, 3/4"x20 UNF, 13/16"x20 UNF.