Usage Tips:Description The spikes can increase the friction between the sole and the ground, prevent slipping, and improve the balance of traction. Metal material, light weight, good elasticity, prevent rust and corrode. Suitable for plastic track, 100-400 m sprint, long jump, running, outdoor sports activities, etc. Features -Color:Black -Material: metal -Size:1.50X0.70X0.70cm/0.59X0.28X0.28in -Provide excellent grip for athletes: flexibility and speeds, to achieve the purpose of track and field sprint, long jump and running. -Suitable for many occasions, such asathletic training, sprint running, cross country, etc. -Not easy to lose when running, These spikes are suitable for all athletic tracks. -A sufficient amount of track spikes to meet your track and filed training needs. -It is very easy for you to screw the track spikes into the shoes, convenient to replace the spikes.Package list: 16 x Track Shoes Spikes