1, Fast dilivery 2, best quality 3, reasonable price 4, strong production line Tungsten Carbide pinswe are the biggest manufacture for carbide nail a good wear ... value. We produce different sizes and different shapes of tungsten carbide pins, studs, nails for the tire stud, spike, shoes, horses, buses, ... Φ2.3*5.2 Φ2.4/Φ2.08*5.8 Tungsten Carbide pins for tiers, spike, shoes, horses, buses, trucks