Track spikes Emil Zatopek, a distance runner from Czech Republic, wore them during the 1952 Olympics in Helesinki. The front of the sole features a rigid or semi-rigid spike plate containing between 3 and 9 threaded holes called spike wells. Spikes can be screwed into each well using a spike wrench. Recently, some individuals have attempted to add a "through hole" at the bottom of the spike to make them easier to tighten, remove, and install. Some shoes have permanent or "fixed" spikes which are not meant to be removed. Spikes may break during competition. Track shoes are exceptionally light, some shoes
Czech Republic manages the largest collection of art in the Czech Republic. Max Švabinský was another important Art nouveau painter. The 20th century brought avant-garde revolution. In the Czech lands mainly expressionist and cubist: Josef Čapek, Emil Filla, Bohumil Kubišta, Jan Zrzavý. Surrealism emerged particularly in the work of Toyen, Josef Šíma and Karel Teige. In the world, however, he pushed mainly František Kupka, a pioneer of abstract painting. As illustrators and cartoonists in the first half of the 20th century gained fame Josef Lada, Zdeněk Burian or Emil Orlík. Art photography has become a new field (František Drtikol, Josef Sudek, later