10-Piece Rail Track Expansion Pack for Railway King Classical Train Sets 2 Straight and 8 Curved Tracks Package contents: 8 x Curved Track, 2 x Straight Track Compatible with ASIN B015975ER2, B0198TSBT0, B073C5V58N, B073DCGCGH, and other compatible railway track sets. Please check images for compatibility. Track width: 1.25"