Light Rail Switch Stop Stoppers
LightRail Switch Stop Stoppers – Slide Nuts and Thumb Screws: Compatible with LightRail 3.0, 3.5, 4.0 and 4.20. The LightRail Switch Stop stoppers are used to stop the Motor at the desired location along the light mover rail. And, this is also the location that the Motor would then switch directions. See more specific indoor grow system product details farther below.