... of 100% quality guarantee customized tungsten carbide tire studs, tyre nails :Chemical composition: WC-80%+Co-10% Density: ... of 100% quality guarantee customized tungsten carbide tire studs, tyre nailsMateria : low carbon steelSurface covering : galvanizingflat head studs/ ... sizes and different shapes of tungsten carbide pins, studs, nails for the tyre stud, spike, shoes, horses, buses, trucks, etc. ...