Project Kics R40 Iconix Extended Lug Nuts M12x1.5 Black Aluminum Cap w/ LocksDeveloped as an evolution of the Racing Composite R40 R40 REVO type, R40 ICONIX has improved the form of penetration and bag nuts with screws so that they can be easily attached and detached with a special wrench even when the wheel is attached. did. In terms of design, the HEX surface is drilled on 6 sides to give a distinctive design that allows the end cap to be seen, making it a gem that stands out as a wheel accent. (Design Registration No.