Exclusive to LightRail™ 3.0, 3.5, and 4.0, these are used on the LR3 rail at your desired lamp travel switching points. Position a Switch Stop where you want the grow light to stop moving and reverse direction. Includes 1 set of 2 stop slide nut and screws. the thumb screws prevent the trolly from pushing the switch stop slide nut off the rail.
This product is a replacement part for the LightRail
