Yellow freight engine, blue passenger engine, 2 hopper cars (yellow and green), black coal car (w/magnetic top), lumber & coal load (magnetic tops).  All have magnet connectors in the front and back.  Cars measure about 4 – 4.75 inches long.  My understanding is that Battat is compatible with Thomas, Brio, and Chuggington.
Check out my other listings for more toy items including other trains.  I combine shipping costs.  Just message me before you pay so that I can apply your discount.