These 1-3/8" thick, 5 on 5" to 5 on 5-1/2", 6061T6 aluminum adapters make it possible to change your wheel bolt pattern. Simply install on a 2007-Present Jeep Wrangler JK, 2006-Present Commander, or 2005-Present Jeep Grand Cherokee WK axle and this adapter will convert your bolt pattern to the Jeep CJ bolt circle. Each kit comes with 2 wheel adapters, 10 standard wheel studs (pre-installed), 10 lug nuts, and Loctite. Each wheel adapter is anodized in dark blue, using a double anodizing process for twice the corrosion resistance. In addition, each wheel adapter is hub centric for a perfect fit. Proudly made in the USA.