HO (5) Sections Curvable Flex Track BRASS Rail Item 8656. Not sure if it is code 83 or 70, one thing I am sure of is, the rails' size is a bit smaller than code 100.Box is in poor condition and both ends are torn with one flap gone and the other just hanging on. Back of box some of the instruction is torn off. This is due to poor storage. Is new/old stock. This is a good piece to add to your train tracks. Please see pictures. Features : * Brass Track * Easy to Use * Spike and Tie Plate Detail * Nail Holes * Realistic Wood Grain Ties * Authentic Rail Contour * (3) Sections of 17" long * (2) Sections of 18" long * Instructions on Back of Box Thank you for looking! Check out my other items !Be sure to add me to your favorites list !