With the 9" 1/4 Radius Curves you can quickly add some complexity to any road course. Buy multiples and create sprials that require concentration to maneuver through. Or simply add them to your existing layout for additional complexity.
These are sold in pairs which allows you to make a 1/4 radius curve. You will need 2 pair in order to complete a circle.
NOTE!!! These are compatible with both Rokar and Life-Like track pieces.