When installing wheel spacers in conjunction with the OEM wheels you often run into issues with the factory flange style wheel nuts. Wheel spacers (including ours) often have longer studs which bottom out inside the OEM lug nuts. To get around this we have made these adapters which allow the use of a 60° tapered lug nut in conjunction with the OEM wheels. Now you can use any off the shelf 60° tapered lug nut. - Machined from 6061-T6 aluminium - Sold as a set of 20 - Made specifically for use on Z34 370z's or G37's but may also fit other vehicles NOTE: Must only be used in conjunction with extended studs. The OEM length studs will not have enough thread engagement.