Bydd i bob trên dri cherbyd, sy'n cynnwys 125 sedd yr un, gyda chyfanswm capasiti o 293. Gogledd Cymru fydd y lle cyntaf i elwa ar y trenau newydd sydd wedi cael eu hychwanegu at y fflyd ar hyd y rheilffyrdd rhwng Wrecsam a Bidstone, Crewe a Chaer a Llandudno a Blaenau Ffestiniog.
Each train will have 3 carriages containing 125 seats with a total capacity of 293. North Wales will be the first to benefit from the additions to the fleet along the Wrexham to Bidston, Crewe to Chester and Llandudno to Blaenau Ffestiniog routes.