PATIKIL 1/2Inch Shoe Spikes, 50 Pack Steel Long Spikes Track and Field Running Spikes Replacement Spikes Nails with Spike Wrench for Jumping Sprint Sports Short Running Track, Silver

Overall Length: 18 mm/ 0.7 inch; Spike Length: 12mm /0.47 inch; Thread Length: 4.6mm/ 0.18 inch; Thread Diameter: 5 mm/ 0.19 inch; Spikes Wrench Size: 76 x 50 x 14 mm/ 2.9 x 1.96 x 0.5(L x W x H); Packing List: 50 x Track Spikes and 1 x Spike Wrench with 1 x Carry Box. Advantage: The spike is made of steel, which is strong and durable, wear-resistant, anti-corrosion and anti-rust. The spikes are specially designed to provide grip on dry terrain for track and field, cross-country roads, hiking, high jumping or cross-country. The pyramid pin of the spikes increases the friction between the shoe and the ground, which can increase running speed and ensure balance.. Application: This is a track and field shoe spikes, you can install the spikes on the sole of the shoe, widely used in track and field sports, plastic track, sand, hurdles, etc.It is suitable for very loose sand and land runway, and can have the effect of pushing off the ground.. Instruction: Easy to use, a spike wrench is included in the package. You simply use a spike wrench to make the spikes into your shoes. Then check which installation method works best for you.. NOTE: Please confirm the size before ordering.