Nails with the Race designation are used most often on Thoroughbred, Quarter Horse or Standardbred race horses that wear light steel or aluminum shoes. These horses are often shod on 3 or 4 week intervals and the small shank of the nail creates less damage to the hoof. Small size shoes used for ponies, yearlings and smaller breeds also may be punched for race nails.In addition to all of the same great features of the regular Liberty nail Liberty Cu horseshoe nails include Copper (Cu) Shield Technology. This technology provides much more protection than traditional horseshoe nails. Hoof wall, white line and sole are stronger and healthier when Liberty Cu nails are used on a daily basis. The Copper(Cu) Shield Technology is unique to Kerckhaert and Liberty Cu horseshoe nails.