Anti-slip nail we are the biggest manufacture for carbide nail a good wear resistance ... and different shapes of tungsten carbide pins, studs, nails for the tyre stud, spike, shoes, horses, buses, trucks, ... etc. All of our materials for the carbide pins are made by our own Carbide Powder Plant ... .4/Φ2.08*5.8 Carbide studbodies for the tyre stud, spike, shoes, horses, buses, trucks, ...