This is the Auto World HO Slot Car Track Adjustable Power Supply.
This power supply will allow you to adjust the power level of the race sets from 9 volts to 24 volts. 2 Amps. The increase in power will provide even more speed while the adjustability allows for beginners to start slow and ramp up the speed as they improve.
Adjustable power supply allows the power level to adjust from 9 volts to 24 volts