These Schumacher Racing Products serrated M4 steel wheel nuts are a factory replacement set of four, designed to secure wheels on compatible Schumacher 1:10 and 1:12 platforms. The serrated flange face bites into the wheel hub to resist loosening under race conditions. The hex profile accepts a standard nut driver or wrench for easy installation and removal. Features: M4 thread pitch Serrated flange for vibration resistance Steel construction Pack of 4 nuts 7/7/26 cs