ITEM NAME:10x Carbon Steel Track Spikes Cross Country Outdoors Replacement Pins Golden Description: Made of premium carbon steel, sturdy and durable. Spikes can add the friction between the shoe sole and ground, thus can resist skid and improve your running speed. Easy to be installed into most of the track shoes. Pyramid needle design, 10 pieces per pack. Great for track sprints, high jump, long jump, long or short distance race, running, cross country, etc. Specification: Material: Carbon Steel Total Length: approx. 12mm / 0.47inch Needle Length: approx. 6.4mm / 0.25inch Package Includes: 10 Pieces Track Spikes Note: Please allow 5-8mm size deviation and slight color difference. SKU: DMO0010361266023949.Spikes can add the friction between the shoe sole and ground, thus can resist skid and improve your running speed. Made of premium carbon steel, sturdy and durable. Material: Carbon Steel. People always bought together with.