MTH RAILKING ROCK ISLAND 4-CAR 60′ STREAMLINED PASSENGER SET. O GAUGE THREE RAIL. BOX IN ROUGH SHAPE. Durable ABS Intricately Detailed Bodies. Metal Wheels and Axles. Operating Die-Cast Metal Couplers. Colorful, Attractive Paint Schemes. 4-Car Sets Feature: (1) Baggage, (1) Coach, (1) Vista Dome Car, (1) Observation. EACH Unit Measures: 16 1/2″ x 2 3/8″ x 3 1/2. Operates On O-31 Curves.