The all new LightRail 4.0 AdjustaDrive is the newest linear light mover available from Gualala Robotics Inc. With both a 0 to 60 second adjustable time delay for promoting even growth from end to end, and a two to four feet per minute adjustable speed that covers a wide range of lamp intensities and travel distances. The all new LightRail 4 AdjustaDrive from Gualala Robotics Inc., designed and manufactured in the USA, is the ultimate in light mover control and is compatible with all LightRail 3.0 and 3.5 rails and accessory items. Simply mount the standard 6.5' track (the 6.5' rail is considered oversize, so cannot be shipped. We will replace it with two 3.5' rails) to the desired area and place the lamp-moving drive motor onto the track. Add an additional 3.5' track to extend your track to 9'. Use an Add-A-Lamp system to accommodate 2 lamps running in line over a 12 foot span. The Robo Stick is the adjustable lamp attaching device that positions, balances and stabilizes your lamp as you mount it to your Light Rail 3.5 Intelli Drive.