Extruded aluminium 3-circuit track. Each circuit may be individually switched. May be cut to length. Pre-drilled fixing holes. Visual polarity line on track face. Track lighting offers maximum flexibility for retail/commercial applications where light sources need to be moved to account for changes in displays. Also compatible with spotlight adaptors from the following manufacturers - Erco, Eutrac, Hoffmeister, iGuzzini, Zumtobel Staff and Nokia.