【Track Spike Wrench Kit】The stainless steel track spike set contains 120 pcs 1/4” and 1/2” pyramid spikes track. In addition, comes with 1 pcs spike wrench for quick installation. Enough quantity can meet your needs; 【Nice Design】①Shoe spikes pins length: 0.25 inch / 6.5 mm, standard 1/4” length; Thread rod length: 0.2 inch / 5mm.② The pins length of another one: 0.5”/12mm, standard 1/2” length; Thread rod length: 0.2 inch / 5.4mm. Pyramid needle design,not damage track. Help you achieve better results. 【Premium Material】 Our shoe spikes are made of quality stainless steel, featured with rust and corrosion resistance, expanding the service time. The spikes wrench is made of durable plastic with nice design to match with the spike nail, so that it is compatible with different size of track spikes. 【Easy to Use and Storage】 Only takes few seconds for installation. Simply put the needle head into the hole of wrench and screw the spike into the shoe. Equipped with a transparent storage box to store them. 【Wide Application】Suitable for women and men. The spike pins effectively increase the grip between the shoe sole and ground thus can resist skid to keep you safety and improve your running balance of traction or speed for track sprints. Perfect for sprint sport, long jump, running, hiking and other outdoor sports.