This ferreteria or hardware store if you must in English is a great store. Unassuming and very…read moreunpretentious, they had the adapter heads for my US electronics to be plugged into Argentenian sockets, and did not overcharge me despite the fact that I could not speak a word of spanish and was very much a foreigner! 8 pesos a head! What a deal! So I bought 3 and boy have they served me well! Thank you ferreteria! You helped me where even Coto my over priced pretentious supermarket failed me!