The Basis Track is a minimal low voltage system manufactured from a lightweight low profile aluminium extrusion. It can form complex shapes using the comprehensive range of available hardware, and can be factory curved to a specified radius. Basis Track is now also available in an antique rubbed bronze finish, where the hardware and luminaires are machined from brass and then hand finished. More on the Versatile Basis Track Spotlights. New: Pictures of the Basis Track Spot Lights.