Compatibility: Compatible with Ford 2000-2003 F150, 2000-2002 Expedition; Compatible with Lincoln 1999-2002 Navigator 5x135 Wheel Spacers: 5x135 mm hubcentric 5 lugs with lip bolts pattern(PCD), thickness: 1 inch, hub centric: 87.1 mm, wheel studs: M14x2. Benefits: The wheel spacers are made of 6061-T6 aircraft-grade aluminum billet and equipped with 10.9 grade geomet bolts, which are not easy to break or crack. CNC automatic processing and surface anodizing ensure high accuracy and stability. Uprade Driving Experience: The 1 inch wheel spacers are installed with no roughness or bumps that you will feel when going over rugged terrain. Spacers are also commonly used to fix backspacing and clearance issues. Installation: The installation position is between the wheel hub bearing and the tire, and the assembly method is distinguished based on the difference between the gasket and the wheel hub bearing. Note: Manual installation is recommended to prevent over-tightening with power tools, which may cause bolt cracking and safety risks. Please recheck your vehicle compatibility (year/make/model) in the product description/pictures before purchasing the wheel spacers. Wheel Spacers-5x135 mm Hubcentric-M14x2-87.1 mm-1 inch-4PCS Black