Slim blade nails are used primarily for riding horses. The slimmer blade is preferred by many farriers because it displaces less hoof and reduces damage to the wall. The head sizes are often the same as their City head counterpart because they are being used in the same shoes. 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.