The Bachmann Powered Railer is a tool every layout needs! Simply place the aluminum base on track to power tapered slots that that allow you to run your longer, multi-wheeled locomotives (or any motive power) right onto the track!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