16Pcs Steel Shoe Studs Track Shoes Spikes for Track Field Sprinting Cross Country Made from high-quality materials, durable and long-lasting, ensuring that you can use them for multiple seasons. Our running shoe spikes are the perfect choice for runners of all levels and shoe types. These spikes can be easily attached to the sole of your shoe for enhanced grip and stability on any terrain. They are also lightweight and easy to install, making them a convenient and practical addition to your running gear. Whether you're running on a track, trail, or pavement, these spikes will help you maintain your footing and prevent slips and falls._x000D_ Specifications: Material: Hard steel Thread diameter: 5mm Nail Length: 7mm(Short/Tower Studs/Pointed Studs), 12mm(Long Studs), 9mm(Jumping Studs) Style: Short Studs, Long Studs, Tower Studs, Pointed Studs, Jumping Studs Short Studs: suitable for plastic tracks running 100-400 meters, with strong grip(Short spikes are suitable for newer and harder tracks) Long Studs: used for coal cinder sand runways, because the land is very loose, to remember the effect of digging and pushing the ground, long nails must be used. Tower Studs: suitable for three-level jump hurdles in plastic tracks, with good elasticity and impact. Pointed Studs: suitable for plastic tracks of 100-400 meters, with strong grip [Sharp nails are suitable for older and softer tracks] Jumping Studs: suitable for the triple jump of high jump and long jump, standing jump, with good elasticity! Note: 1.Due to the light and monitors effect, colors may have lightly difference. 2.Please allow slightly size errors due to manual measurement. Thank you for your understand! Package Included: 16Pcs x Shoe Studs _x000D_ _x000D_ _x000D_