Fitment: Fuel Tank Step is compatible with All Peterbilt trucks with a 26" diameter fuel tank Materials : The Fuel Tank Stair is made of aluminum, longer usage life. Powder Coated forms a solid protective layer Function: The fuel tank step provides a convenient step for the driver or other personnel to enter and exit the truck. Located on the side of the truck's fuel tank, the step also provides protection for the tank side, reducing the risk of tank damage Surface: The surface of the tank step is non-slip, so the driver can stand steadily on the step even in wet conditions, reducing the risk of slipping Packaging and Installation: 1 × 26" Fuel Tank Step. Install with screws only. Installation hardware is included. Instructions are not included. It is recommended to seek the help of professional installers