These ready-to-run cars feature prepainted and lettered, injection-molded styrene bodies. Models include free-rolling Delrin(R) trucks with contoured axles, truck-mounted Magne-Matic(R) couplers and diecast metal underframes. Cars also feature movable ice hatches and separate foot stirrups and brakewheel.WARNING: This product can expose you to chemicals including Bisphenal A, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov