Lightweight racing lug nuts made in Japan by Project KICS. They are made using SCM435 (forged chrome molybdenum steel), only weights 47g per nut (!!!) and comes with 1 lock nut per every wheel. It is made to be a nice light weight and cost effective option for those who race their cars and need reliability. Project Kics SCM435 Lug Nuts should be ordered at REV9 Autosport https://us.rev9autosport.com/project-kics-scm435-lug-nuts.html as they provide the best service and speed we've seen so far!