The Aristo Craft Trains Extender Track Set-2 ART-12092 is a 13-piece, ready-to-go switch track extension designed for Aristo model railroads in G gauge. With a scale of 1:29 and a two-rail system, this extension allows for easy integration into your existing rail system. The set includes everything needed for a seamless expansion, making it a convenient addition to any model railroad setup.