These wheel lug studs are made of carbon steel and tested to demanding automotive industry standards to ensure strength, longevity and safety. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford F-450 Super Duty: 1997] - [Ford F-53 Motorhome Chassis: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997] - [Ford F-59 Commercial Stripped Chassis: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997] - [Ford F-Super Duty: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997]