This is meant for an ho scale train layout if you want to replicate a Loram TracShield Friction Modifier which is mostly seen on the BNSF railroad line. I made this in 123D modeling app. This model contains 1 solar panel and the control box. Note: This model is for display only, it doesn't actually dispense lubricant. I hope you enjoy my model. I highly reccomend using frosted white ultra detail because its the only material that will print with this small of a model.