These hub centric spacers-adapters move your wheels out to help fit wider tires and give your vehicle a wider track and improve stability. Constructed of double anodized black extra thick 6061T6 aluminum for long life and extra corrosion resistance. All hardware is grade-8 for extra strength. Each part number comes as a spacer pair. Included are 10 pre-installed grade-8 wheel studs, 10 lug nuts and thread locker. This pair of 1.375 inch black aluminum wheel adapters from Rugged Ridge convert a 5x5 inch to a 5x5.5 inch bolt pattern. These hub centric spacers-adapters move your wheels out to help fit wider tires and give your vehicle a wider track and improve stability. Constructed of double anodized black extra thick 6061T6 aluminum for long life and extra corrosion resistance. All hardware is grade-8 for extra strength. Each part number comes as a spacer pair. Included are 10 pre-installed grade-8 wheel studs; 10 lug nuts and thread locker. Jeep: Wrangler 2007 - 2017, Jeep: Wrangler JK 2018 - 2018