Description: [Reliable Construction]: Made from high wear resistant hard steel, these track spikes are designed to withstand extensive use, ensuring long term performance for track and field athletes [Versatile Use]: Ideal for use on synthetic tracks, these track shoes spikes are suitable for middle and long distance running, triple jump, and hurdles, providing great adaptability across various events [Enhanced Performance]: Engineered to offer grip and stability, these track spikes help increase and conserve energy during athletic activities [Package Contents]: Includes 20 track spikes with a thread of 5 mm and 1 wrench measuring 6.3 cmx4.3 cm or 2.48 inchx1.69 inch, offering everything you need for quick installation and adjustments [Material]: Crafted from steel and plastic materials to ensure durability while maintaining lightweight characteristics essential for competitive sports Specification: Material: Steel Plastic Size Chart: Spikes Thread 0.5cm or 0.20inch Wrench 6.3cmx4.3cm or 2.48inchx1.69inch Package Includes: 20 Track Spikes 1 Wrench Note: Please allow slightly errors 1-2cm or 0.39-0.79inch differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.