These 4 pieces 6 lug wheel spacers are 2 inches or 50mm thick with a 6x5.5 inches or 6139.7mm bolt pattern allows for extra clearance between the wheel and the wheel hub assembly increasing the offset which allows for larger tire installation to the vehicle. Wheel spacers also increase vehicle's performance in handling and traction. Wheel spacers extend the wheels outward the vehicle giving it a more agressive look, which also allows for large brake caliper installations or lift/lowering kits.