We present a new set of zero metallicity models in the range 13-80M_{sun}_ together to the associated explosive nucleosynthesis. These models are fully homogeneous with the solar metallicity set we published in Limongi & Chieffi (2006ApJ...647..483L) and will be freely available at the Online Repository for the FRANEC Evolutionary Output (ORFEO) Web site. A comparison between these yields and an average star that represents the average behavior of most of the very metal-poor stars in the range -5.0<[Fe/H]<-2.5 confirms previous findings that only a fraction of the elemental [X/Fe] may be fitted by the ejecta of standard core collapse supernovae.