Locomotives cannot just turn around whenever they want like cars and trucks can, they need a turntable! The round red piece in the middle is 3.25? long and can turn one locomotive or train car at a time (locomotives or train cars longer than 3.25? such as our Express Train may not fit on the turntable). By rotating the turntable, young engineers can point their locomotives in any direction they like. Besides turning around to go back the way you came, a turntable is also handy for parking locomotives on sidings. Compatible with most wooden train systems. Ages 3 and above. 33361 Brio