Bigjigs Rail Medium Straights (Pack of 4) - Other Major Wooden Rail Brands are Compatible An essential track pack that enables young railway enthusiasts to personalize and extend their Bigjigs railway network. A great way to inspire imaginative play sessions. Most other major wooden railway brands are compatible with Bigjigs Rail. 4 pieces of wooden track, each measuring 5.5 inches. Made from high quality, responsibly sourced materials.