Sunex 992416 7/16-Inch by 1/2-Inch Extra Long Double Box Ratcheting Wrench Universal spline designed to accommodate 6 pt., 12 pt., spline, rounded hex, E-star and square fasteners V-Groove spanner provides non-slip grip of fastener flats - reducing spanner spread over time and wear on fasteners Forged from high quality CR-MO alloy steel 72 fine teeth provide 5 swivel arc 7/16-Inch by 1/2-Inch