Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Nr II is a class of articulated six-axle (B''2''B'' wheel arrangement), chopper-driven tram operated by Helsinki City Transport (HKL) on the Helsinki tram network. All trams of this type were built by the Finnish metal industry corporation Valmet between the years 1983 and 1987.Between 1996 and 2005 all trams in the class were modernised by HKL and redesignated as Nr II+ class. From 2006 onwards all trams of this class will be rebuilt with a low-floor midsection. The units rebuilt with low-floor midsection are also known with the class designation MLNRV.