This is the O Scale 2-Pack of Blinking Hazard Barricades from Williams by Bachmann. Suitable for Ages 14 & Older. FEATURES: Requires standard 12-14V AC railroad accessory power connection for operation Can operate from track power with Track Lock-On Power Connector (BACU5691) INCLUDES: 2-Pack of Blinking Hazard Barricades SPECS: Scale: O 1/48 tlc 5/15/12