Infinity (MG+) Set This is the Infinity Raceway Set from AFX. Features:8.5 feet (2.6m) of running trackOver-under racingTri-power pack - 3 power levels let you race at your own speedMega-G+ chassisDirectional power pack allows you to reverse the race direction with the flip of the plugNew AFX 120 controllersEasy snap together track assemblyTech Specs: Tri-power packInput: 120VAC, 60HZ, 450mATri-power Pack Output: 22.0VDC 1A 22.