The lug nuts required for all ICON Alloys are 60° taper acorn style lug nuts. There are several options available that will work (hex, spline, tamper proof etc.) as long as the seat remains a 60° taper acorn. This is a very common lug type and is available at most auto parts stores or wheel & tire centers. For more information contact ICON tech support at (951) 689-ICON.