Both items feature palstic cosntruction

powerful booster for supplying power to the layout with track current and accessory current

Kit comes with flashing lights and smoke oil to fill the 16V AC smoke generator that sends thick smoke through the windows

The Trainz SKU for this item is P11565416

Model Power 1451 HO Block Signals Set ProductID_12357510 Both items feature palstic cosntructionThis is a Model Power 1451 HO Block Signals Set Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Model Power Model Number: 1451 MSRP: $14. 99 Scale Era: HO Scale Model Type: Accessories The Trainz SKU for this item is P12584032. Trainz Product Id: 12584032