These track spikes are convenient for you to have different sports activities. Made of metal material, very strong, not easy to deform or break, small size, keep from slipping and avoid having damage to the track. Easy to screw the track nails into the shoes and take out by wrench, which is convenient to replace the spikes. Features -Color:Assorted Color -Material:Metal -Size:7.50X4.70X1.50cm/2.95X1.85X0.59in -These track spikes can provide excellent grip for athletes, increasing flexibility and speeds, achieve the purpose of sports, long jump and running. -Spikes will add the friction between the shoe sole and ground, thus can resist skid and improve your running speeds. -Sufficient amount of track spikes for sports to meet your track and running training needs. -Made of metal materials, with good workmanship, these spikes for track shoes are not easy to deform or break. -Small size, Easy to screw the track nails into the shoes, and convenient to take out by using wrench. Package list: 1 x staple remover 1 x box 16 x short spikes 16 x long spikes 16 spikes