Track bedding. The 3 mm thick Track bedding segments are both straight and curved in lengths and radii corresponding to the I-Track plywood segments. The Track bedding segments are supplied as single or double track. Simply assemble them to the required shape under the rails on the base plate, I-Track segments or the Rondela spiral pitch. The Track bedding egments are made of high quality flexible material. It ensures quiet, vibration-free train operation. You can cut them with a sharp knife and glued with hot melt glue or CA Hacker glue directly to the base board . The package contains 12 identical segments.