... gold, blueSurfaceZinc coatedDetails of material of flat head studs/ tungsten carbide tire studs in car for Motorcycle, ATV, Farm, ... of 100% quality guarantee customized tungsten carbide tire studs, tyre nails :Chemical composition: WC-80%+Co-10% Density: (g/cm3): ... color: black 2.cloth of 100% quality guarantee customized tungsten carbide tire studs, tyre nailsMateria : low carbon steelSurface covering ...