Size - Nail Head Length: 9.5mm (3/8 Inch); Nail Head Diameter: 7.5mm / 0.3"; Thread Size: 5.3mm / 0.21"; Total Length: 16mm / 0.63"; Thread Pitch: 32G.||Material - Made of alloy steel, it prevents rust and corroding, has high hardness, is strong and wear-resistant, is not easy to break, and has a long service life. Helps improve your running speed, and can achieve better results in competition.||Feature - Tapered needle shape track spikes can increase the friction between the shoe and the ground, prevent skidding and ensure safety. It also improves the balance of traction, flexibility and speed as you run. And will not damage the runway.||Application - Provides optimal grip for runway such as cinder, sand, etc. General size for most running shoes to use, suitable for running 100-3000 meters, both short, medium and long-distance running. If you like running, cross country, or you are a sports enthusiast, these track spikes will be of great help.||Package Content - 10pcs x track spikes.If you have any questions, please feel free to contact us.
