【SIZE】 Each shoe spike measures 1/4 inch (6.35 mm) in length, general size for most running shoes to use. 【YOU WILL GET】50 black spikes + 1 spike wrench + 1 plastic box, enough for meeting your replacement demands and can satisfy your daily usage. 【ALLOY STEEL】These shoe spikes are made of high quality alloy steel, durable and sturdy, anti-rust and not easy to deform, Alloy steel service life is about 3 times that of ordinary steel. 【EXTENSIVE USAGE】These spikes are designed with pyramid needle shape for increasing the friction between shoes and ground, Except for track and cross country, it is also suitable for running and other outdoor sports activities. 【RELIABLE PURCHASING 】Any questions or disatisfactions with your purchase, please kindly let us know, Lejof Direct guarantee you replacement or refund within 180 Days, and Lifetime Warranty. Clicking the Yellow "ADD TO CART BUTTON" Above, it's yours today. track spikes shoe spikes replacements stainless steel track spikes cross country spikes spike wrench steel spikes 1/4 inch spikes for track shoes 0.25 inch track spikes for men track spikes women