The AZL Z Scale GP-38-2 locomotive series offers you a total of 10 different road names including an undecorated version. Most of the road names of these awesome little locomotives have 3 to 4 different road numbers so you set up a nice string of engines. Digitrax now offers a drop in DCC decoder for the AZL z scale GP38-2 series. While AZL offers these as an "entry" level z scale locomotive, you will not be disappointed with the feature and detail they offer. Powered by a 12V 7.5mm SDK/AZL motor the unit has dual flywheels. Add to that the LED directional lighting and the fact that the locomotives are DCC ready and you will see these z scale locomotives are a great buy.