Description It's convenient for you to change the tacks. There is enough quantity for your daily use. Made of high class hard steel material, very strong, rust and corrosion resistant. Well-designed, no damages to the track, just rest assure to have your training on track. It is easy for you to screw the track nails into the shoes, which is convenient to replace the spikes. Features -Color: As shown.-Material: Hard steel.-Size: About1.40X0.50X0.50cm/ 0.55X0.20X0.20inch.-You will get enough track spikes for meeting your replacement demands and can satisfy your daily usage.-Lightweight, prevent easily corrode, providing long servicing life, more suitable for competitions to achieve good results.-Suitable for plastic track, 100-400 m sprint, long jump, running, outdoor sports activities, etc.-Made of high class hard steel material, very strong, rust and corrosion resistant.-Well designed, damage free to the track, just rest assure to have your training on track. Packing list: 50 x track shoes spikes1 x nail puller