Four lengths of 00 retaining wall in Engineers Blue brick on 480gsm Black Card. Ready to cut and fix to the backboard. Each length is 22cm by 8cm high. Please see photos for putting them as a long wall by removing one end pillar. This gives a total length of 83.5 cm. Ideal for the narrow gap between the track and the backboard. These are easy to fix with removable sticky pads ( not supplied). A very affordable and instant solution to the creating depth to the layout. Posted in a card backed 'Please do not bend' envelope.