Abstract: Disclosed is a golf shoe which comprises spikes provided in a lower surface of a sole. Each of the spikes is composed of a spike pin provided projectingly in the lower surface of the sole and projecting catches arranged around the spike pin. The spike pin is caused to be retractable in its axial direction and pressed to be protruded more than a tip position of each of the projecting catches. Also disclosed is a spike for a golf shoe, which comprises a spike pin and projecting catches arranged around the spike pin. The spike pin is caused to be retractable in its axial direction and pressed to be protruded more than a tip position of each of the projecting catches.

Abstract: A threadedly engageable tire stud includes an elongated steel housing having a hexagonal head section and a threaded section of enlarged pitch for securely engaging a tire thread wherein the head section has approximately the same diameter as a major diameter of the threaded section. A longitudinally extended aperture is provided in the hexagonal head section for receiving an elongated carbide pin. The carbide pin is brazed to the elongated steel housing and protrudes out of the head section of the housing for engaging the road surface to improve traction of the tire.