The cs_skins.zip file you have requested: Skins / Skin Packs / Counter-Strike Source - UBCS and S.T.A.R.S. Skins - 1.5mb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
This is 2 skins for Counter-strike source which is A member of the Ubcs squad and S.t.a.r.s members, install in materialsmodelsplayererro and Urban These are two skins for Counter-Strike Source featuring a member of the UBCS squad and S.T.A.R.S. members.