All new AFX track borders. Now CNC Machined from Black Sintra material similar to Stock AFX track. These inner and outer borders work great and allow you to slide your cars around without sliding off the track. Each listing contains 2 pcs as pictured (1/8 circle each). Our AFX track borders are paintable, sandable and easy to install. We recommend using 1/32″ thick double sided tape to secure and also space the border to the perfect height.