Brand: CARRERA OF AMERICA Manufacturer's Part Number: 20030367 Part Type: Slot Car Set Components Product Line: Carrera Digital Extensions Summit Racing Part Number: CAI-20030367 UPC: 050227303675 Slot Car Set Component Type: Track extension Quantity: Sold individually. Notes: Only works in conjunction with the Control Unit (30352). Carrera Digital Extensions Carrera Digital Extensions are track extensions for use with your Carrera DIGITAL 124 and Carrera DIGITAL 132 race track sets (sold separately). Even if you are always working on improving your lap time with the familiar and beloved slot car circuit， you will eventually feel the need for more variety―and that's exactly what this digital track extension set is designed for. With four standard straight sections， a left lane change， a double lane change track， track locking mechanisms and a lane change corner， new track elements can be added to the Carrera DIGITAL 124 and DIGITAL 132 race tracks. Tracks come on a scale of 1:24 and are ideally suited to the two race tracks mentioned above. The lane changes ensure rapid switching action to give you the opportunity to overtake the opponent's car imaginatively， especially during chases. Meanwhile， the straight track sections your driving fun and help to expand the circuit.