This Bachmann Silver Series(R) Scale Test Weight Car is a model of typical the diminutive cars used to calibrate track scales used for measuring car and load weights. They were used to check axle load limits and to determine the billing of customers for cargo loads. Scale Test Car features a die-cast metal body with realistic decoration, metal wheels and body-mounted E-Z Mate(R) magnetic knuckle couplers.WARNING: This product can expose you to chemicals including Lead, 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