Description:Material: steel,carbonSize:7*5mm/0.2*0.1inchColor:black/silver-- The silver model is made of steel, and its hardness reaches the industry benchmark level; the weight of the black model is one-third of that of steel, and its elasticity is good and suitable for use as competition spikes.-- The black model has poor wear resistance and is easy to wear under high-intensity exercise. Athlete friends know that running 500-800 meters will wear out.-- Our track studs are 7mm (1/4") long and will meet the needs of most people. The included nail head wrench makes it easy to replace the track nails.-- The product is a universal model, suitable for 99% of spikes on the market.-- Our steel nails are 8-15 wear-resistant; competition carbon nails are 1-2 wear-resistant.-- Suitable for sports such as: sprinting, hurdles, long jump, etc.NOTE1. As we all know ,the different computers display colors differently,the color of the actual item may vary slightly from the following images.2. If you feel difficult to choose the size ,you can feel free to contact mewe will give you some suggestion,but it is for you reference only.3.We could accept Mixed items,Colors And Sizes Order. The more quantities, the more discount.Package include: 42/100 pcs* Replace the spikes1 pcs* Staple

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