The handles have the distinctive shape associated with a type of krater made in Vulci and exported to Etruscan settlements as far away as Spina in Northern Italy. The youths wearing winged boots and holding the bridles of their horses are almost certainly the twin gods, Castur and Pultuce (Roman: Castor and Pollux), the sons of Zeus; the two are known in Etruscan as Tinas Cliniar. These are the largest and most elaborate handles of this type now extant.
Metropolitan Museum of Art. 1961. "Illustrations." Bulletin of the Metropolitan Museum of Art, 20(2): p. 52.
Teitz, Richard Stuart. 1967. Masterpieces of Etruscan Art. no. 49, pp. 60-61, 150-51, Worcester, Mass.: Davis Press.