Description This track spike is 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. With tool to easy for you to screw the track nails into the shoes, which is convenient to replace the spikes. Features -Color:Fluorescent Green(Spike Puller) -Material:Carbon Steel, ABS -Size(Track Spikes):1.00X0.20X0.20cm/0.39X0.08X0.08in -Size(Spike Puller):6.00X5.00X2.50cm/2.36X1.97X0.98in -Provide excellent grip for athletes, increasing flexibility and speeds, to achieve the purpose of track and field sprint, long jump and running. -Spikes will add the friction between the shoe sole and ground, thus can resist skid and improve your running speeds, perfect for track sprints, running, long jump, outdoor sports activities. -The pin can increase the friction between the sole and the ground, prevent slipping, and improve the balance of traction. -A sufficient amount of track spikes to meet your track and filed training needs. -The workmanship of this product is perfect, and you will have a good experience in using it. Package list: 10 x Shoe Spikes 1 x Spike Puller