It has durable plastic construction and comes assembled

The Trainz SKU for this item is P11636997

The Trainz SKU for this item is P12341750

The Trainz SKU for this item is P12168212

Features: Limited edition - one-time run of these numbers

MTH 20-97728 O Gauge Union Pacific 50' Airslide Hopper #20568 ProductID_12109775 It has durable plastic constructionHere is a MTH 20 97728 O Gauge Union Pacific 50' Airslide Hopper #20568. Features include an Intricately Detailed Durable ABS Body, Metal Wheels and Axles, Diecast 4 Wheel Trucks, Operating Diecast Metal Couplers, Colorful, Attractive Paint Schemes, Fast Angle Wheel Sets, Needle Point Axles, 1: 48 Scale Dimensions, Separate Metal Handrails, O Scale Kadee Compatible Coupler Mounting Pads, Unit Measures: 13 5 8" x 2 11 16" x 3 11 16", and it Operates On