This listing is for 2, to all intents and purposes, brand new pirastro oliv D strings. When I switched to evah pirazzi I experimented with G, D oliv, A, E evah. I found crossing between the D and A very uncomfortable, so the Oliv D came off straight away to be replaced by an evah. The string currently retails on thomann and string zone at between £154 and £160. This listing is for 2 strings but I could separate if that suited. Please ask.