Description Made of steel, which is sturdy and durable, besides, they are rust resistant and not easy to get erosion, can serve you for a long time. All these spikes are in pyramid needle shape, good to add the friction between shoes and ground, so that they can resist skid and anti-slip effectively for running and other sports activities. Features - Color: Silver. - Material: Stainless Steel. - Size: 1.2 x 0.7 x 0.7 cm. - Made of steel, which is sturdy and durable, besides, they are rust resistant and not easy to get erosion, can serve you for a long time. - In pyramid needle shape, good to add the friction between shoes and ground. - Can resist skid and anti-slip effectively for running and other sports activities. - Useful tools fit for different kinds of standard track shoes. - Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Package list: 110 x Spike 1 x Wrench