150S Pedo Upper Incisors Bicuspids & Roots Universal, 150XAS Pedo Upper Anteriors, Split Beaks Serrated, 151S Pedo Lower Incisors, Bicuspids & Roots, Universal, 151XAS Pedo Lower Anteriors, Split Beaks Serrated, 16S 4?? Pedo Lower Molars, Cow Horn, 17S 4 ? Pedo Lower Molars Universal. Spring Handle, 23S 4 ? Pedo Lower Molars Universal Cow Horn, Spring Handle