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 resistance and good RS value. We produce different sizes and different shapes of tungsten carbide pins, studs, nails for the tire stud, spike, shoes, horses, buses, trucks, etc. All of our materials for the carbide pins are made by our own ...