Lightweight and great looking、 these blue-anodized-aluminum flange lock nuts are the perfect finishing touch for your serious road racer.<br><BR>Traxxas package of four flanged nylon locknuts are serrated on the back for sure grip. They are constructed of blue anodized aluminum.<br><BR><li>Part type  Factory Replacement Part.<BR><li>Hardware type  Locknut.<BR><li>Measurements  4mm.