Light Rail 4.20 AdjustaDrive Kit Robotic Grow Light Mover for 2 Lights Genuine Solidly Made in the USA LightRail 4.20 AdjustaDrive Kit moves 2 lights with Motor, Rails, Add A Lamp Kit, Extreme Duty Trolley Wheels pre-installed. Genuine LightRail meets important guidelines (see below). Has both adjustable time delay and speed. Meets all guidelines (see below). Only LightRail performs over many years with the power and endurance for any light at any weight. Keep it Real, Keep it LightRail; Solidly made in the USA since 1986.