... different sizes and different shapes of tungsten carbide pins, studs, nails for the tyre stud, spike, shoes, horses, buses, trucks, etc.All ... : YG8 YG15 YG10X ect 4: according customer design1.center of tyre studs:Chemical composition: WC-80%+Co-10% (YT10)Density: (g/cm3 ... resistance :71+/-7.5the center color: black 2.cloth of tyre studsMateria : low carbon steel YG10/YG15/YG10X ectSurface covering : ...