Thank you for viewing this listing. These rails are compatible with LEGO Duplo train tracks. They also fit on baseplates. Includes: 12 curved rails 16 straight rails 1 level crossing piece I purchased these on another site several years ago. There is no major damage, but there are scratches and scuffs as they have been played with by children. The track layout in the photo is approximately 70cm long x 83cm wide. The straight rails are approximately 12.8cm long, excluding the connecting parts. I hope this is helpful. Thank you.