For lower cuspids 3-3, anatomically preformed. 1 assortment = 20 pieces Contents 4 x remanium® lingual retainer, Length 26 mm (728-503-00) 4 x remanium® lingual retainer, Length 22 mm (728-501-00) 4 x remanium® lingual retainer, Length 28 mm (728-504-00) 4 x remanium® lingual retainer, Length 24 mm (728-502-00) 4 x remanium® lingual retainer, Length 30 mm (728-505-00)