Double S Hoof Knives are made in Italy by brothers Marco and Leonardo Schelfi. Their knives are made from high grade steel in Inox material and represent excellent value. The Vet Loop knives are part of the Double S Deluxe range, coming in three sizes. Smaller loops are used more for precision work, while larger loops are used for everyday work. The medium loop is the most common size loop sold today to trim frogs but the small loop bIade is best for probing for abscesses. Double S Loop Vet Knives have a comfortable handle for all day use.