US Wheel Adapters offers many styles of lug nuts and lug bolts including, but not limited to: open-ended, closed-ended, acorn, bulge acorn, spline & tuner, truck spline acorn, dually acorn, ET, MAG, and Spiked. All Bolt on Wheel Adapters & Wheel Spacers come with the necessary lug nuts to install properly. However we also offer lug nuts and extended lug bolts to accommodate your wheels! Extended Lug Bolts make up the thread length necessary to install slip-on style wheel spacers. In order to be matched with the correct length of lug bolts, measure the length of the factory lug bolts, and add the thickness of the spacers. Then, select the closest matching size. Ball Seat Lug Bolts available on web soon! Call to order ball