The order comprises 46 three-car and 24 four-car type AT200 EMUs. This is Hitachi's first order for its new AT200 design, and the 160km/h trains will have 23m-long coaches and cab-end gangways to allow passengers to pass between trains operating in multiple.

The first seven trains will be built at Hitachi's Kasado factory in western Japan. After this, production will switch to Hitachi's new British assembly plant in Newton Aycliffe. The first trains are due to enter service in late 2017 and the fleet will be deployed on the Edinburgh – Glasgow main line, which is being upgraded, and services from Glasgow and Edinburgh to Stirling, Dunblane and Alloa. Delivery is due to be completed by December 2018.